664075299 has 8 divisors (see below), whose sum is σ = 894030592. Its totient is φ = 438418440.

The previous prime is 664075261. The next prime is 664075337. The reversal of 664075299 is 992570466.

It is an interprime number because it is at equal distance from previous prime (664075261) and next prime (664075337).

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

It is not a de Polignac number, because 664075299 - 2⁸ = 664075043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (664075229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1074247 + ... + 1074864.

It is an arithmetic number, because the mean of its divisors is an integer number (111753824).

Almost surely, 2^664075299 is an apocalyptic number.

664075299 is a deficient number, since it is larger than the sum of its proper divisors (229955293).

664075299 is a wasteful number, since it uses less digits than its factorization.

664075299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2149217.

The product of its (nonzero) digits is 816480, while the sum is 48.

The square root of 664075299 is about 25769.6584959910. The cubic root of 664075299 is about 872.4471109119.

The spelling of 664075299 in words is "six hundred sixty-four million, seventy-five thousand, two hundred ninety-nine".