6694140 has 96 divisors (see below), whose sum is σ = 19998720. Its totient is φ = 1670400.

The previous prime is 6694133. The next prime is 6694147. The reversal of 6694140 is 414966.

6694140 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (6694133) and next prime (6694147).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 6694098 and 6694107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6694147) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 109710 + ... + 109770.

It is an arithmetic number, because the mean of its divisors is an integer number (208320).

Almost surely, 2^6694140 is an apocalyptic number.

6694140 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 6694140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9999360).

6694140 is an abundant number, since it is smaller than the sum of its proper divisors (13304580).

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

6694140 is a wasteful number, since it uses less digits than its factorization.

6694140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 6694140 is about 2587.3036157359. The cubic root of 6694140 is about 188.4653854126.

The spelling of 6694140 in words is "six million, six hundred ninety-four thousand, one hundred forty".