253681608 has 16 divisors (see below), whose sum is σ = 634204080. Its totient is φ = 84560528.

The previous prime is 253681591. The next prime is 253681609. The reversal of 253681608 is 806186352.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (253681609) 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, 5285010 + ... + 5285057.

It is an arithmetic number, because the mean of its divisors is an integer number (39637755).

Almost surely, 2^253681608 is an apocalyptic number.

It is an amenable number.

253681608 is an abundant number, since it is smaller than the sum of its proper divisors (380522472).

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

253681608 is a wasteful number, since it uses less digits than its factorization.

253681608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10570076 (or 10570072 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 253681608 is about 15927.3854728264. The cubic root of 253681608 is about 633.0378250821.

The spelling of 253681608 in words is "two hundred fifty-three million, six hundred eighty-one thousand, six hundred eight".