64274500 has 24 divisors (see below), whose sum is σ = 140376600. Its totient is φ = 25709600.

The previous prime is 64274477. The next prime is 64274543. The reversal of 64274500 is 547246.

It can be written as a sum of positive squares in 4 ways, for example, as 19998784 + 44275716 = 4472^2 + 6654^2 .

It is a super-2 number, since 2×64274500² = 8262422700500000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63775 + ... + 64774.

It is an arithmetic number, because the mean of its divisors is an integer number (5849025).

Almost surely, 2^64274500 is an apocalyptic number.

It is an amenable number.

64274500 is an abundant number, since it is smaller than the sum of its proper divisors (76102100).

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

64274500 is a wasteful number, since it uses less digits than its factorization.

64274500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128568 (or 128556 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 64274500 is about 8017.1378932884. The cubic root of 64274500 is about 400.5710593401.

The spelling of 64274500 in words is "sixty-four million, two hundred seventy-four thousand, five hundred".