264646313 has 4 divisors (see below), whose sum is σ = 265293780. Its totient is φ = 263998848.

The previous prime is 264646279. The next prime is 264646337. The reversal of 264646313 is 313646462.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 313646462 = 2 ⋅156823231.

It can be written as a sum of positive squares in 2 ways, for example, as 215267584 + 49378729 = 14672^2 + 7027^2 .

It is a cyclic number.

It is not a de Polignac number, because 264646313 - 2¹⁰ = 264645289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (264646363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323120 + ... + 323937.

It is an arithmetic number, because the mean of its divisors is an integer number (66323445).

Almost surely, 2^264646313 is an apocalyptic number.

It is an amenable number.

264646313 is a deficient number, since it is larger than the sum of its proper divisors (647467).

264646313 is an equidigital number, since it uses as much as digits as its factorization.

264646313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647466.

The product of its digits is 62208, while the sum is 35.

The square root of 264646313 is about 16267.9535590682. The cubic root of 264646313 is about 642.0299421858.

The spelling of 264646313 in words is "two hundred sixty-four million, six hundred forty-six thousand, three hundred thirteen".