664050659 has 16 divisors (see below), whose sum is σ = 697973760. Its totient is φ = 631020000.

The previous prime is 664050643. The next prime is 664050701. The reversal of 664050659 is 956050466.

It is a cyclic number.

It is not a de Polignac number, because 664050659 - 2⁴ = 664050643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (664050059) 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, 409352 + ... + 410970.

It is an arithmetic number, because the mean of its divisors is an integer number (43623360).

Almost surely, 2^664050659 is an apocalyptic number.

664050659 is a deficient number, since it is larger than the sum of its proper divisors (33923101).

664050659 is a wasteful number, since it uses less digits than its factorization.

664050659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1882.

The product of its (nonzero) digits is 194400, while the sum is 41.

The square root of 664050659 is about 25769.1804099393. The cubic root of 664050659 is about 872.4363202868.

The spelling of 664050659 in words is "six hundred sixty-four million, fifty thousand, six hundred fifty-nine".