253631678 has 8 divisors (see below), whose sum is σ = 386895960. Its totient is φ = 124666360.

The previous prime is 253631671. The next prime is 253631683. The reversal of 253631678 is 876136352.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253631671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1074593 + ... + 1074828.

It is an arithmetic number, because the mean of its divisors is an integer number (48361995).

Almost surely, 2^253631678 is an apocalyptic number.

253631678 is a deficient number, since it is larger than the sum of its proper divisors (133264282).

253631678 is a wasteful number, since it uses less digits than its factorization.

253631678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2149482.

The product of its digits is 181440, while the sum is 41.

The square root of 253631678 is about 15925.8179695738. The cubic root of 253631678 is about 632.9962905344.

The spelling of 253631678 in words is "two hundred fifty-three million, six hundred thirty-one thousand, six hundred seventy-eight".