56626681 has 4 divisors (see below), whose sum is σ = 57831552. Its totient is φ = 55421812.

The previous prime is 56626637. The next prime is 56626693. The reversal of 56626681 is 18662665.

56626681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 56626681 - 2²¹ = 54529529 is a prime.

It is a super-3 number, since 3×56626681³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56626601) 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 3 ways as a sum of consecutive naturals, for example, 602365 + ... + 602458.

It is an arithmetic number, because the mean of its divisors is an integer number (14457888).

Almost surely, 2^56626681 is an apocalyptic number.

It is an amenable number.

56626681 is a deficient number, since it is larger than the sum of its proper divisors (1204871).

56626681 is a wasteful number, since it uses less digits than its factorization.

56626681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204870.

The product of its digits is 103680, while the sum is 40.

The square root of 56626681 is about 7525.0701657858. The cubic root of 56626681 is about 384.0080858577.

The spelling of 56626681 in words is "fifty-six million, six hundred twenty-six thousand, six hundred eighty-one".