664737010252 has 24 divisors (see below), whose sum is σ = 1329574658720. Its totient is φ = 284865724800.

The previous prime is 664737010181. The next prime is 664737010279. The reversal of 664737010252 is 252010737466.

It is a junction number, because it is equal to n+sod(n) for n = 664737010199 and 664737010208.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 519249 + ... + 1264552.

Almost surely, 2^664737010252 is an apocalyptic number.

It is an amenable number.

664737010252 is an abundant number, since it is smaller than the sum of its proper divisors (664837648468).

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

664737010252 is a wasteful number, since it uses less digits than its factorization.

664737010252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1797121 (or 1797119 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 43.

The spelling of 664737010252 in words is "six hundred sixty-four billion, seven hundred thirty-seven million, ten thousand, two hundred fifty-two".