253113666 has 48 divisors (see below), whose sum is σ = 572049216. Its totient is φ = 74488128.

The previous prime is 253113647. The next prime is 253113683. The reversal of 253113666 is 666311352.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 17896 + ... + 28748.

It is an arithmetic number, because the mean of its divisors is an integer number (11917692).

Almost surely, 2^253113666 is an apocalyptic number.

253113666 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 253113666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (286024608).

253113666 is an abundant number, since it is smaller than the sum of its proper divisors (318935550).

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

253113666 is a wasteful number, since it uses less digits than its factorization.

253113666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10907 (or 10894 counting only the distinct ones).

The product of its digits is 19440, while the sum is 33.

The square root of 253113666 is about 15909.5463794541. The cubic root of 253113666 is about 632.5650573877.

The spelling of 253113666 in words is "two hundred fifty-three million, one hundred thirteen thousand, six hundred sixty-six".