664885100748 has 36 divisors (see below), whose sum is σ = 1705256281400. Its totient is φ = 201480333120.

The previous prime is 664885100723. The next prime is 664885100797. The reversal of 664885100748 is 847001588466.

It is a super-2 number, since 2×664885100748² (a number of 24 digits) contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 228953473 + ... + 228956376.

Almost surely, 2^664885100748 is an apocalyptic number.

It is an amenable number.

664885100748 is an abundant number, since it is smaller than the sum of its proper divisors (1040371180652).

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

664885100748 is a wasteful number, since it uses less digits than its factorization.

664885100748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457909878 (or 457909865 counting only the distinct ones).

The product of its (nonzero) digits is 10321920, while the sum is 57.

The spelling of 664885100748 in words is "six hundred sixty-four billion, eight hundred eighty-five million, one hundred thousand, seven hundred forty-eight".