664752553 has 8 divisors (see below), whose sum is σ = 677678400. Its totient is φ = 651841008.

The previous prime is 664752533. The next prime is 664752577. The reversal of 664752553 is 355257466.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 664752553 - 2⁵ = 664752521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (664752533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174018 + ... + 177796.

It is an arithmetic number, because the mean of its divisors is an integer number (84709800).

Almost surely, 2^664752553 is an apocalyptic number.

It is an amenable number.

664752553 is a deficient number, since it is larger than the sum of its proper divisors (12925847).

664752553 is a wasteful number, since it uses less digits than its factorization.

664752553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7151.

The product of its digits is 756000, while the sum is 43.

The square root of 664752553 is about 25782.7956785140. The cubic root of 664752553 is about 872.7435971414.

The spelling of 664752553 in words is "six hundred sixty-four million, seven hundred fifty-two thousand, five hundred fifty-three".