6974640 has 80 divisors (see below), whose sum is σ = 24031200. Its totient is φ = 1859328.

The previous prime is 6974629. The next prime is 6974647. The reversal of 6974640 is 464796.

6974640 is a `hidden beast` number, since 6 + 9 + 7 + 4 + 640 = 666.

6974640 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 6974595 and 6974604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6974647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 546 + ... + 3774.

It is an arithmetic number, because the mean of its divisors is an integer number (300390).

Almost surely, 2^6974640 is an apocalyptic number.

6974640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6974640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12015600).

6974640 is an abundant number, since it is smaller than the sum of its proper divisors (17056560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6974640 is a wasteful number, since it uses less digits than its factorization.

6974640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3251 (or 3239 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 6974640 is about 2640.9543729493. The cubic root of 6974640 is about 191.0618295300.

The spelling of 6974640 in words is "six million, nine hundred seventy-four thousand, six hundred forty".