56881646 has 8 divisors (see below), whose sum is σ = 86721384. Its totient is φ = 27974520.

The previous prime is 56881633. The next prime is 56881663. The reversal of 56881646 is 64618865.

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

It is a junction number, because it is equal to n+sod(n) for n = 56881597 and 56881606.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233000 + ... + 233243.

It is an arithmetic number, because the mean of its divisors is an integer number (10840173).

Almost surely, 2^56881646 is an apocalyptic number.

56881646 is a deficient number, since it is larger than the sum of its proper divisors (29839738).

56881646 is a wasteful number, since it uses less digits than its factorization.

56881646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466306.

The product of its digits is 276480, while the sum is 44.

The square root of 56881646 is about 7541.9921771373. The cubic root of 56881646 is about 384.5835627642.

The spelling of 56881646 in words is "fifty-six million, eight hundred eighty-one thousand, six hundred forty-six".