64673274 has 32 divisors (see below), whose sum is σ = 131569920. Its totient is φ = 21190400.

The previous prime is 64673243. The next prime is 64673341. The reversal of 64673274 is 47237646.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149839 + ... + 150269.

It is an arithmetic number, because the mean of its divisors is an integer number (4111560).

Almost surely, 2^64673274 is an apocalyptic number.

64673274 is an abundant number, since it is smaller than the sum of its proper divisors (66896646).

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

64673274 is a wasteful number, since it uses less digits than its factorization.

64673274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806.

The product of its digits is 169344, while the sum is 39.

The square root of 64673274 is about 8041.9695348839. The cubic root of 64673274 is about 401.3977641160.

It can be divided in two parts, 646 and 73274, that added together give a triangular number (73920 = T₃₈₄).

The spelling of 64673274 in words is "sixty-four million, six hundred seventy-three thousand, two hundred seventy-four".