64507460 has 12 divisors (see below), whose sum is σ = 135465708. Its totient is φ = 25802976.

The previous prime is 64507447. The next prime is 64507477. The reversal of 64507460 is 6470546.

It can be written as a sum of positive squares in 2 ways, for example, as 7474756 + 57032704 = 2734^2 + 7552^2 .

It is a super-2 number, since 2×64507460² = 8322424791303200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1612667 + ... + 1612706.

It is an arithmetic number, because the mean of its divisors is an integer number (11288809).

Almost surely, 2^64507460 is an apocalyptic number.

It is an amenable number.

64507460 is an abundant number, since it is smaller than the sum of its proper divisors (70958248).

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

64507460 is a wasteful number, since it uses less digits than its factorization.

64507460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3225382 (or 3225380 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 64507460 is about 8031.6536279897. The cubic root of 64507460 is about 401.0544263536.

The spelling of 64507460 in words is "sixty-four million, five hundred seven thousand, four hundred sixty".