253323665 has 8 divisors (see below), whose sum is σ = 347415360. Its totient is φ = 173707632.

The previous prime is 253323643. The next prime is 253323703. The reversal of 253323665 is 566323352.

253323665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 253323665 - 2¹⁸ = 253061521 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 7237819 = 253323665 / (2 + 5 + 3 + 3 + 2 + 3 + 6 + 6 + 5).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3618875 + ... + 3618944.

It is an arithmetic number, because the mean of its divisors is an integer number (43426920).

Almost surely, 2^253323665 is an apocalyptic number.

It is an amenable number.

253323665 is a deficient number, since it is larger than the sum of its proper divisors (94091695).

253323665 is an equidigital number, since it uses as much as digits as its factorization.

253323665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7237831.

The product of its digits is 97200, while the sum is 35.

The square root of 253323665 is about 15916.1447907463. The cubic root of 253323665 is about 632.7399476015.

The spelling of 253323665 in words is "two hundred fifty-three million, three hundred twenty-three thousand, six hundred sixty-five".