253666898 has 8 divisors (see below), whose sum is σ = 380672892. Its totient is φ = 126775936.

The previous prime is 253666873. The next prime is 253666913. The reversal of 253666898 is 898666352.

It can be written as a sum of positive squares in 2 ways, for example, as 252396769 + 1270129 = 15887^2 + 1127^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

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, 23015 + ... + 32202.

Almost surely, 2^253666898 is an apocalyptic number.

253666898 is a deficient number, since it is larger than the sum of its proper divisors (127005994).

253666898 is a wasteful number, since it uses less digits than its factorization.

253666898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57516.

The product of its digits is 3732480, while the sum is 53.

The square root of 253666898 is about 15926.9236828711. The cubic root of 253666898 is about 633.0255890533.

The spelling of 253666898 in words is "two hundred fifty-three million, six hundred sixty-six thousand, eight hundred ninety-eight".