664916299 has 4 divisors (see below), whose sum is σ = 665381736. Its totient is φ = 664450864.

The previous prime is 664916281. The next prime is 664916341. The reversal of 664916299 is 992619466.

664916299 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 992619466 = 2 ⋅496309733.

It is a cyclic number.

It is not a de Polignac number, because 664916299 - 2⁷ = 664916171 is a prime.

It is a super-2 number, since 2×664916299² = 884227369351714802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (664910299) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 230569 + ... + 233434.

It is an arithmetic number, because the mean of its divisors is an integer number (166345434).

Almost surely, 2^664916299 is an apocalyptic number.

664916299 is a deficient number, since it is larger than the sum of its proper divisors (465437).

664916299 is a wasteful number, since it uses less digits than its factorization.

664916299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465436.

The product of its digits is 1259712, while the sum is 52.

The square root of 664916299 is about 25785.9709726045. The cubic root of 664916299 is about 872.8152511426.

The spelling of 664916299 in words is "six hundred sixty-four million, nine hundred sixteen thousand, two hundred ninety-nine".