664296995 has 16 divisors (see below), whose sum is σ = 805601280. Its totient is φ = 525831264.

The previous prime is 664296973. The next prime is 664297021. The reversal of 664296995 is 599692466.

664296995 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 664296995 - 2⁶ = 664296931 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 664296995.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 277574 + ... + 279956.

It is an arithmetic number, because the mean of its divisors is an integer number (50350080).

Almost surely, 2^664296995 is an apocalyptic number.

664296995 is a deficient number, since it is larger than the sum of its proper divisors (141304285).

664296995 is a wasteful number, since it uses less digits than its factorization.

664296995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2954.

The product of its digits is 6298560, while the sum is 56.

The square root of 664296995 is about 25773.9596298279. The cubic root of 664296995 is about 872.5441865072.

The spelling of 664296995 in words is "six hundred sixty-four million, two hundred ninety-six thousand, nine hundred ninety-five".