264690523 has 2 divisors, whose sum is σ = 264690524. Its totient is φ = 264690522.

The previous prime is 264690473. The next prime is 264690553. The reversal of 264690523 is 325096462.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 264690523 - 2²⁵ = 231136091 is a prime.

It is a super-2 number, since 2×264690523² = 140122145932027058, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (264690553) 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, 132345261 + 132345262.

It is an arithmetic number, because the mean of its divisors is an integer number (132345262).

Almost surely, 2^264690523 is an apocalyptic number.

264690523 is a deficient number, since it is larger than the sum of its proper divisors (1).

264690523 is an equidigital number, since it uses as much as digits as its factorization.

264690523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 264690523 is about 16269.3123087609. The cubic root of 264690523 is about 642.0656912365.

The spelling of 264690523 in words is "two hundred sixty-four million, six hundred ninety thousand, five hundred twenty-three".