426565664 has 24 divisors (see below), whose sum is σ = 959773248. Its totient is φ = 182813760.

The previous prime is 426565663. The next prime is 426565679. The reversal of 426565664 is 466565624.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (426565663) 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 3 ways as a sum of consecutive naturals, for example, 951932 + ... + 952379.

It is an arithmetic number, because the mean of its divisors is an integer number (39990552).

Almost surely, 2^426565664 is an apocalyptic number.

It is an amenable number.

426565664 is an abundant number, since it is smaller than the sum of its proper divisors (533207584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

426565664 is a wasteful number, since it uses less digits than its factorization.

426565664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1904328 (or 1904320 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 44.

The square root of 426565664 is about 20653.4661497774. The cubic root of 426565664 is about 752.7694139490.

The spelling of 426565664 in words is "four hundred twenty-six million, five hundred sixty-five thousand, six hundred sixty-four".