664982299 has 2 divisors, whose sum is σ = 664982300. Its totient is φ = 664982298.

The previous prime is 664982243. The next prime is 664982323. The reversal of 664982299 is 992289466.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 664982299 - 2¹⁵ = 664949531 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (664982099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332491149 + 332491150.

It is an arithmetic number, because the mean of its divisors is an integer number (332491150).

Almost surely, 2^664982299 is an apocalyptic number.

664982299 is a deficient number, since it is larger than the sum of its proper divisors (1).

664982299 is an equidigital number, since it uses as much as digits as its factorization.

664982299 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3359232, while the sum is 55.

The square root of 664982299 is about 25787.2507065022. The cubic root of 664982299 is about 872.8441289130.

It can be divided in two parts, 664982 and 299, that added together give a triangular number (665281 = T₁₁₅₃).

The spelling of 664982299 in words is "six hundred sixty-four million, nine hundred eighty-two thousand, two hundred ninety-nine".