664202375 has 16 divisors (see below), whose sum is σ = 839429760. Its totient is φ = 524628000.

The previous prime is 664202369. The next prime is 664202377. The reversal of 664202375 is 573202466.

It is not a de Polignac number, because 664202375 - 2¹⁸ = 663940231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664202377) 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 15 ways as a sum of consecutive naturals, for example, 23756 + ... + 43505.

It is an arithmetic number, because the mean of its divisors is an integer number (52464360).

Almost surely, 2^664202375 is an apocalyptic number.

664202375 is a deficient number, since it is larger than the sum of its proper divisors (175227385).

664202375 is an equidigital number, since it uses as much as digits as its factorization.

664202375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67355 (or 67345 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 35.

The square root of 664202375 is about 25772.1239908549. The cubic root of 664202375 is about 872.5027572210.

Subtracting from 664202375 its reverse (573202466), we obtain a palindrome (90999909).

The spelling of 664202375 in words is "six hundred sixty-four million, two hundred two thousand, three hundred seventy-five".