253889668 has 12 divisors (see below), whose sum is σ = 444640140. Its totient is φ = 126849632.

The previous prime is 253889651. The next prime is 253889711. The reversal of 253889668 is 866988352.

It is a happy number.

253889668 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 252873604 + 1016064 = 15902^2 + 1008^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17623 + ... + 28606.

It is an arithmetic number, because the mean of its divisors is an integer number (37053345).

Almost surely, 2^253889668 is an apocalyptic number.

It is an amenable number.

253889668 is a deficient number, since it is larger than the sum of its proper divisors (190750472).

253889668 is a wasteful number, since it uses less digits than its factorization.

253889668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47606 (or 47604 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 55.

The square root of 253889668 is about 15933.9156518415. The cubic root of 253889668 is about 633.2108423005.

The spelling of 253889668 in words is "two hundred fifty-three million, eight hundred eighty-nine thousand, six hundred sixty-eight".