653703664 has 20 divisors (see below), whose sum is σ = 1333212040. Its totient is φ = 309648960.

The previous prime is 653703653. The next prime is 653703667. The reversal of 653703664 is 466307356.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (653703667) 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, 1074867 + ... + 1075474.

It is an arithmetic number, because the mean of its divisors is an integer number (66660602).

Almost surely, 2^653703664 is an apocalyptic number.

It is an amenable number.

653703664 is an abundant number, since it is smaller than the sum of its proper divisors (679508376).

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

653703664 is a wasteful number, since it uses less digits than its factorization.

653703664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2150368 (or 2150362 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 40.

The square root of 653703664 is about 25567.6292213416. The cubic root of 653703664 is about 867.8812511423.

The spelling of 653703664 in words is "six hundred fifty-three million, seven hundred three thousand, six hundred sixty-four".