253105668 has 24 divisors (see below), whose sum is σ = 656200160. Its totient is φ = 84368520.

The previous prime is 253105667. The next prime is 253105691. The reversal of 253105668 is 866501352.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (253105661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1171678 + ... + 1171893.

Almost surely, 2^253105668 is an apocalyptic number.

It is an amenable number.

253105668 is an abundant number, since it is smaller than the sum of its proper divisors (403094492).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

253105668 is a wasteful number, since it uses less digits than its factorization.

253105668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2343584 (or 2343576 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 253105668 is about 15909.2950189504. The cubic root of 253105668 is about 632.5583946253.

The spelling of 253105668 in words is "two hundred fifty-three million, one hundred five thousand, six hundred sixty-eight".