264872917 has 2 divisors, whose sum is σ = 264872918. Its totient is φ = 264872916.

The previous prime is 264872887. The next prime is 264872941. The reversal of 264872917 is 719278462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 155900196 + 108972721 = 12486^2 + 10439^2 .

It is a cyclic number.

It is not a de Polignac number, because 264872917 - 2⁷ = 264872789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264872947) 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 as a sum of consecutive naturals, namely, 132436458 + 132436459.

It is an arithmetic number, because the mean of its divisors is an integer number (132436459).

Almost surely, 2^264872917 is an apocalyptic number.

It is an amenable number.

264872917 is a deficient number, since it is larger than the sum of its proper divisors (1).

264872917 is an equidigital number, since it uses as much as digits as its factorization.

264872917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 338688, while the sum is 46.

The square root of 264872917 is about 16274.9168047029. The cubic root of 264872917 is about 642.2131364357.

It can be divided in two parts, 264 and 872917, that added together give a triangular number (873181 = T₁₃₂₁).

The spelling of 264872917 in words is "two hundred sixty-four million, eight hundred seventy-two thousand, nine hundred seventeen".