45688631 has 4 divisors (see below), whose sum is σ = 46048512. Its totient is φ = 45328752.

The previous prime is 45688627. The next prime is 45688667. The reversal of 45688631 is 13688654.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 45688631 - 2² = 45688627 is a prime.

It is a super-2 number, since 2×45688631² = 4174902005308322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45688681) 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, 179750 + ... + 180003.

It is an arithmetic number, because the mean of its divisors is an integer number (11512128).

Almost surely, 2^45688631 is an apocalyptic number.

45688631 is a deficient number, since it is larger than the sum of its proper divisors (359881).

45688631 is a wasteful number, since it uses less digits than its factorization.

45688631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359880.

The product of its digits is 138240, while the sum is 41.

The square root of 45688631 is about 6759.3365798723. The cubic root of 45688631 is about 357.4945140730.

The spelling of 45688631 in words is "forty-five million, six hundred eighty-eight thousand, six hundred thirty-one".