264785317 has 2 divisors, whose sum is σ = 264785318. Its totient is φ = 264785316.

The previous prime is 264785299. The next prime is 264785321. The reversal of 264785317 is 713587462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 226171521 + 38613796 = 15039^2 + 6214^2 .

It is a cyclic number.

It is not a de Polignac number, because 264785317 - 2²⁷ = 130567589 is a prime.

It is a super-2 number, since 2×264785317² = 140222528197580978, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264785617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132392658 + 132392659.

It is an arithmetic number, because the mean of its divisors is an integer number (132392659).

Almost surely, 2^264785317 is an apocalyptic number.

It is an amenable number.

264785317 is a deficient number, since it is larger than the sum of its proper divisors (1).

264785317 is an equidigital number, since it uses as much as digits as its factorization.

264785317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 282240, while the sum is 43.

The square root of 264785317 is about 16272.2253241528. The cubic root of 264785317 is about 642.1423300600.

The spelling of 264785317 in words is "two hundred sixty-four million, seven hundred eighty-five thousand, three hundred seventeen".