253696866 has 16 divisors (see below), whose sum is σ = 508248000. Its totient is φ = 84423248.

The previous prime is 253696847. The next prime is 253696867. The reversal of 253696866 is 668696352.

It is not an unprimeable number, because it can be changed into a prime (253696867) 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, 31701 + ... + 38888.

It is an arithmetic number, because the mean of its divisors is an integer number (31765500).

Almost surely, 2^253696866 is an apocalyptic number.

253696866 is an abundant number, since it is smaller than the sum of its proper divisors (254551134).

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

253696866 is a wasteful number, since it uses less digits than its factorization.

253696866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71193.

The product of its digits is 2799360, while the sum is 51.

The square root of 253696866 is about 15927.8644519597. The cubic root of 253696866 is about 633.0505164469.

The spelling of 253696866 in words is "two hundred fifty-three million, six hundred ninety-six thousand, eight hundred sixty-six".