264630861 has 32 divisors (see below), whose sum is σ = 429287040. Its totient is φ = 159782400.

The previous prime is 264630791. The next prime is 264630881. The reversal of 264630861 is 168036462.

264630861 is a `hidden beast` number, since 2 + 646 + 3 + 0 + 8 + 6 + 1 = 666.

It is not a de Polignac number, because 264630861 - 2⁷ = 264630733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264630881) 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 in 31 ways as a sum of consecutive naturals, for example, 85501 + ... + 88541.

It is an arithmetic number, because the mean of its divisors is an integer number (13415220).

Almost surely, 2^264630861 is an apocalyptic number.

It is an amenable number.

264630861 is a deficient number, since it is larger than the sum of its proper divisors (164656179).

264630861 is a wasteful number, since it uses less digits than its factorization.

264630861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3354 (or 3348 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 264630861 is about 16267.4786306914. The cubic root of 264630861 is about 642.0174464645.

The spelling of 264630861 in words is "two hundred sixty-four million, six hundred thirty thousand, eight hundred sixty-one".