56697628 has 24 divisors (see below), whose sum is σ = 108062640. Its totient is φ = 25872000.

The previous prime is 56697623. The next prime is 56697647. The reversal of 56697628 is 82679665.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56697623) 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 7 ways as a sum of consecutive naturals, for example, 1498 + ... + 10753.

It is an arithmetic number, because the mean of its divisors is an integer number (4502610).

Almost surely, 2^56697628 is an apocalyptic number.

It is an amenable number.

56697628 is a deficient number, since it is larger than the sum of its proper divisors (51365012).

56697628 is a wasteful number, since it uses less digits than its factorization.

56697628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12357 (or 12355 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 49.

The square root of 56697628 is about 7529.7827325893. The cubic root of 56697628 is about 384.1683922191.

The spelling of 56697628 in words is "fifty-six million, six hundred ninety-seven thousand, six hundred twenty-eight".