6694560 has 72 divisors (see below), whose sum is σ = 22850100. Its totient is φ = 1784832.

The previous prime is 6694537. The next prime is 6694561. The reversal of 6694560 is 654966.

It is a happy number.

6694560 is a `hidden beast` number, since 6 + 6 + 94 + 560 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6290064 + 404496 = 2508^2 + 636^2 .

It is a tau number, because it is divible by the number of its divisors (72).

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

It is not an unprimeable number, because it can be changed into a prime (6694561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 885 + ... + 3764.

Almost surely, 2^6694560 is an apocalyptic number.

6694560 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 6694560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11425050).

6694560 is an abundant number, since it is smaller than the sum of its proper divisors (16155540).

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

6694560 is a wasteful number, since it uses less digits than its factorization.

6694560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4670 (or 4659 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 6694560 is about 2587.3847800434. The cubic root of 6694560 is about 188.4693268602.

The spelling of 6694560 in words is "six million, six hundred ninety-four thousand, five hundred sixty".