45686578 has 16 divisors (see below), whose sum is σ = 79015680. Its totient is φ = 19406016.

The previous prime is 45686573. The next prime is 45686581. The reversal of 45686578 is 87568654.

It is not an unprimeable number, because it can be changed into a prime (45686573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12858 + ... + 16021.

It is an arithmetic number, because the mean of its divisors is an integer number (4938480).

Almost surely, 2^45686578 is an apocalyptic number.

45686578 is a deficient number, since it is larger than the sum of its proper divisors (33329102).

45686578 is a wasteful number, since it uses less digits than its factorization.

45686578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29001.

The product of its digits is 1612800, while the sum is 49.

The square root of 45686578 is about 6759.1847141501. The cubic root of 45686578 is about 357.4891593694.

It can be divided in two parts, 45686 and 578, that added together give a palindrome (46264).

The spelling of 45686578 in words is "forty-five million, six hundred eighty-six thousand, five hundred seventy-eight".