64774460 has 24 divisors (see below), whose sum is σ = 138922560. Its totient is φ = 25358144.

The previous prime is 64774447. The next prime is 64774481. The reversal of 64774460 is 6447746.

It is a congruent number.

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, 33515 + ... + 35394.

It is an arithmetic number, because the mean of its divisors is an integer number (5788440).

Almost surely, 2^64774460 is an apocalyptic number.

It is an amenable number.

64774460 is an abundant number, since it is smaller than the sum of its proper divisors (74148100).

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

64774460 is a wasteful number, since it uses less digits than its factorization.

64774460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68965 (or 68963 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 38.

The square root of 64774460 is about 8048.2581966535. The cubic root of 64774460 is about 401.6069936164.

The spelling of 64774460 in words is "sixty-four million, seven hundred seventy-four thousand, four hundred sixty".