264665017 has 2 divisors, whose sum is σ = 264665018. Its totient is φ = 264665016.

The previous prime is 264664951. The next prime is 264665029. The reversal of 264665017 is 710566462.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 181198521 + 83466496 = 13461^2 + 9136^2 .

It is a cyclic number.

It is not a de Polignac number, because 264665017 - 2²³ = 256276409 is a prime.

It is a super-2 number, since 2×264665017² = 140095142447220578, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (264665087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132332508 + 132332509.

It is an arithmetic number, because the mean of its divisors is an integer number (132332509).

Almost surely, 2^264665017 is an apocalyptic number.

It is an amenable number.

264665017 is a deficient number, since it is larger than the sum of its proper divisors (1).

264665017 is an equidigital number, since it uses as much as digits as its factorization.

264665017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 264665017 is about 16268.5284214646. The cubic root of 264665017 is about 642.0450670834.

It can be divided in two parts, 264 and 665017, that added together give a triangular number (665281 = T₁₁₅₃).

The spelling of 264665017 in words is "two hundred sixty-four million, six hundred sixty-five thousand, seventeen".