64248704 has 32 divisors (see below), whose sum is σ = 137844840. Its totient is φ = 29652480.

The previous prime is 64248689. The next prime is 64248707. The reversal of 64248704 is 40784246.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64248707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17642 + ... + 20969.

Almost surely, 2^64248704 is an apocalyptic number.

64248704 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

64248704 is an abundant number, since it is smaller than the sum of its proper divisors (73596136).

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

64248704 is a wasteful number, since it uses less digits than its factorization.

64248704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38638 (or 38626 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 35.

The square root of 64248704 is about 8015.5289282742. The cubic root of 64248704 is about 400.5174636232.

The spelling of 64248704 in words is "sixty-four million, two hundred forty-eight thousand, seven hundred four".