664757753 has 16 divisors (see below), whose sum is σ = 758025216. Its totient is φ = 577053840.

The previous prime is 664757729. The next prime is 664757761. The reversal of 664757753 is 357757466.

It is not a de Polignac number, because 664757753 - 2²⁰ = 663709177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (664757713) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170876 + ... + 174722.

It is an arithmetic number, because the mean of its divisors is an integer number (47376576).

Almost surely, 2^664757753 is an apocalyptic number.

It is an amenable number.

664757753 is a deficient number, since it is larger than the sum of its proper divisors (93267463).

664757753 is a wasteful number, since it uses less digits than its factorization.

664757753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4564.

The product of its digits is 3704400, while the sum is 50.

The square root of 664757753 is about 25782.8965207558. The cubic root of 664757753 is about 872.7458728027.

The spelling of 664757753 in words is "six hundred sixty-four million, seven hundred fifty-seven thousand, seven hundred fifty-three".