56646438 has 8 divisors (see below), whose sum is σ = 113292888. Its totient is φ = 18882144.

The previous prime is 56646419. The next prime is 56646439. The reversal of 56646438 is 83464665.

It is a sphenic number, since it is the product of 3 distinct primes.

56646438 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 56646438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56646439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4720531 + ... + 4720542.

It is an arithmetic number, because the mean of its divisors is an integer number (14161611).

Almost surely, 2^56646438 is an apocalyptic number.

56646438 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

56646438 is a wasteful number, since it uses less digits than its factorization.

56646438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9441078.

The product of its digits is 414720, while the sum is 42.

The square root of 56646438 is about 7526.3827965365. The cubic root of 56646438 is about 384.0527406943.

The spelling of 56646438 in words is "fifty-six million, six hundred forty-six thousand, four hundred thirty-eight".