56820631 has 8 divisors (see below), whose sum is σ = 65072000. Its totient is φ = 48602808.

The previous prime is 56820619. The next prime is 56820637. The reversal of 56820631 is 13602865.

56820631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 56820631 - 2¹¹ = 56818583 is a prime.

It is a super-2 number, since 2×56820631² = 6457168214476322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 56820593 and 56820602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56820637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4641 + ... + 11626.

It is an arithmetic number, because the mean of its divisors is an integer number (8134000).

Almost surely, 2^56820631 is an apocalyptic number.

56820631 is a deficient number, since it is larger than the sum of its proper divisors (8251369).

56820631 is a wasteful number, since it uses less digits than its factorization.

56820631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16773.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 56820631 is about 7537.9460730361. The cubic root of 56820631 is about 384.4460036808.

The spelling of 56820631 in words is "fifty-six million, eight hundred twenty thousand, six hundred thirty-one".