253317668 has 12 divisors (see below), whose sum is σ = 458592540. Its totient is φ = 122291232.

The previous prime is 253317667. The next prime is 253317679. The reversal of 253317668 is 866713352.

It can be written as a sum of positive squares in 2 ways, for example, as 194825764 + 58491904 = 13958^2 + 7648^2 .

It is not an unprimeable number, because it can be changed into a prime (253317661) 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, 1091771 + ... + 1092002.

It is an arithmetic number, because the mean of its divisors is an integer number (38216045).

Almost surely, 2^253317668 is an apocalyptic number.

It is an amenable number.

253317668 is a deficient number, since it is larger than the sum of its proper divisors (205274872).

253317668 is a wasteful number, since it uses less digits than its factorization.

253317668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2183806 (or 2183804 counting only the distinct ones).

The product of its digits is 181440, while the sum is 41.

The square root of 253317668 is about 15915.9563960197. The cubic root of 253317668 is about 632.7349545538.

The spelling of 253317668 in words is "two hundred fifty-three million, three hundred seventeen thousand, six hundred sixty-eight".