45627681 has 16 divisors (see below), whose sum is σ = 66670848. Its totient is φ = 27526800.

The previous prime is 45627649. The next prime is 45627739. The reversal of 45627681 is 18672654.

It is not a de Polignac number, because 45627681 - 2⁵ = 45627649 is a prime.

It is a super-2 number, since 2×45627681² = 4163770546875522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (45627611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4446 + ... + 10536.

It is an arithmetic number, because the mean of its divisors is an integer number (4166928).

Almost surely, 2^45627681 is an apocalyptic number.

It is an amenable number.

45627681 is a deficient number, since it is larger than the sum of its proper divisors (21043167).

45627681 is a wasteful number, since it uses less digits than its factorization.

45627681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6332.

The product of its digits is 80640, while the sum is 39.

The square root of 45627681 is about 6754.8264966615. The cubic root of 45627681 is about 357.3354738732.

It can be divided in two parts, 45 and 627681, that added together give a palindrome (627726).

The spelling of 45627681 in words is "forty-five million, six hundred twenty-seven thousand, six hundred eighty-one".