664798360 has 16 divisors (see below), whose sum is σ = 1495796400. Its totient is φ = 265919328.

The previous prime is 664798331. The next prime is 664798363. The reversal of 664798360 is 63897466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664798363) 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, 8309940 + ... + 8310019.

It is an arithmetic number, because the mean of its divisors is an integer number (93487275).

Almost surely, 2^664798360 is an apocalyptic number.

It is an amenable number.

664798360 is an abundant number, since it is smaller than the sum of its proper divisors (830998040).

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

664798360 is a wasteful number, since it uses less digits than its factorization.

664798360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16619970 (or 16619966 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 49.

The square root of 664798360 is about 25783.6839881348. The cubic root of 664798360 is about 872.7636431207.

The spelling of 664798360 in words is "six hundred sixty-four million, seven hundred ninety-eight thousand, three hundred sixty".