253791668 has 48 divisors (see below), whose sum is σ = 496290816. Its totient is φ = 112769280.

The previous prime is 253791661. The next prime is 253791677. The reversal of 253791668 is 866197352.

Its product of digits (544320) is a multiple of the sum of its prime factors (864).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253791661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 504305 + ... + 504807.

It is an arithmetic number, because the mean of its divisors is an integer number (10339392).

Almost surely, 2^253791668 is an apocalyptic number.

It is an amenable number.

253791668 is a deficient number, since it is larger than the sum of its proper divisors (242499148).

253791668 is a wasteful number, since it uses less digits than its factorization.

253791668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864 (or 862 counting only the distinct ones).

The product of its digits is 544320, while the sum is 47.

The square root of 253791668 is about 15930.8401536140. The cubic root of 253791668 is about 633.1293598610.

The spelling of 253791668 in words is "two hundred fifty-three million, seven hundred ninety-one thousand, six hundred sixty-eight".