264517663 has 2 divisors, whose sum is σ = 264517664. Its totient is φ = 264517662.

The previous prime is 264517621. The next prime is 264517679. The reversal of 264517663 is 366715462.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 264517663 - 2¹³ = 264509471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264517063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132258831 + 132258832.

It is an arithmetic number, because the mean of its divisors is an integer number (132258832).

Almost surely, 2^264517663 is an apocalyptic number.

264517663 is a deficient number, since it is larger than the sum of its proper divisors (1).

264517663 is an equidigital number, since it uses as much as digits as its factorization.

264517663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 40.

The square root of 264517663 is about 16263.9989854894. The cubic root of 264517663 is about 641.9258906830.

The spelling of 264517663 in words is "two hundred sixty-four million, five hundred seventeen thousand, six hundred sixty-three".