313645565 has 8 divisors (see below), whose sum is σ = 376532280. Its totient is φ = 250811392.

The previous prime is 313645561. The next prime is 313645567. The reversal of 313645565 is 565546313.

It can be written as a sum of positive squares in 4 ways, for example, as 13039321 + 300606244 = 3611^2 + 17338^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 313645565 - 2² = 313645561 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313645561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1481 + ... + 25089.

It is an arithmetic number, because the mean of its divisors is an integer number (47066535).

Almost surely, 2^313645565 is an apocalyptic number.

It is an amenable number.

313645565 is a deficient number, since it is larger than the sum of its proper divisors (62886715).

313645565 is a wasteful number, since it uses less digits than its factorization.

313645565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26271.

The product of its digits is 162000, while the sum is 38.

The square root of 313645565 is about 17710.0413607648. The cubic root of 313645565 is about 679.4326041155.

The spelling of 313645565 in words is "three hundred thirteen million, six hundred forty-five thousand, five hundred sixty-five".