755645664 has 48 divisors (see below), whose sum is σ = 1989541008. Its totient is φ = 251123712.

The previous prime is 755645659. The next prime is 755645701. The reversal of 755645664 is 466546557.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20674 + ... + 44030.

It is an arithmetic number, because the mean of its divisors is an integer number (41448771).

Almost surely, 2^755645664 is an apocalyptic number.

It is an amenable number.

755645664 is an abundant number, since it is smaller than the sum of its proper divisors (1233895344).

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

755645664 is a wasteful number, since it uses less digits than its factorization.

755645664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23707 (or 23699 counting only the distinct ones).

The product of its digits is 3024000, while the sum is 48.

The square root of 755645664 is about 27489.0098766762. The cubic root of 755645664 is about 910.8343448780.

The spelling of 755645664 in words is "seven hundred fifty-five million, six hundred forty-five thousand, six hundred sixty-four".