664262464 has 28 divisors (see below), whose sum is σ = 1323429408. Its totient is φ = 330800000.

The previous prime is 664262461. The next prime is 664262483. The reversal of 664262464 is 464262466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664262461) 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, 4612 + ... + 36739.

It is an arithmetic number, because the mean of its divisors is an integer number (47265336).

Almost surely, 2^664262464 is an apocalyptic number.

664262464 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

664262464 is a deficient number, since it is larger than the sum of its proper divisors (659166944).

664262464 is a wasteful number, since it uses less digits than its factorization.

664262464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41614 (or 41604 counting only the distinct ones).

The product of its digits is 331776, while the sum is 40.

The square root of 664262464 is about 25773.2897395734. The cubic root of 664262464 is about 872.5290675942.

The spelling of 664262464 in words is "six hundred sixty-four million, two hundred sixty-two thousand, four hundred sixty-four".