253656634 has 48 divisors (see below), whose sum is σ = 486077760. Its totient is φ = 98165760.

The previous prime is 253656607. The next prime is 253656647. The reversal of 253656634 is 436656352.

253656634 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 179322 + ... + 180730.

It is an arithmetic number, because the mean of its divisors is an integer number (10126620).

Almost surely, 2^253656634 is an apocalyptic number.

253656634 is a deficient number, since it is larger than the sum of its proper divisors (232421126).

253656634 is a wasteful number, since it uses less digits than its factorization.

253656634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1603 (or 1596 counting only the distinct ones).

The product of its digits is 388800, while the sum is 40.

The square root of 253656634 is about 15926.6014579382. The cubic root of 253656634 is about 633.0170510029.

The spelling of 253656634 in words is "two hundred fifty-three million, six hundred fifty-six thousand, six hundred thirty-four".