757121664 has 64 divisors (see below), whose sum is σ = 2165819040. Its totient is φ = 232958976.

The previous prime is 757121663. The next prime is 757121681. The reversal of 757121664 is 466121757.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (757121663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70842 + ... + 80825.

Almost surely, 2^757121664 is an apocalyptic number.

It is an amenable number.

757121664 is an abundant number, since it is smaller than the sum of its proper divisors (1408697376).

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

757121664 is a wasteful number, since it uses less digits than its factorization.

757121664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151697 (or 151685 counting only the distinct ones).

The product of its digits is 70560, while the sum is 39.

The square root of 757121664 is about 27515.8438722130. The cubic root of 757121664 is about 911.4270023338.

The spelling of 757121664 in words is "seven hundred fifty-seven million, one hundred twenty-one thousand, six hundred sixty-four".