253456664 has 8 divisors (see below), whose sum is σ = 475231260. Its totient is φ = 126728328.

The previous prime is 253456639. The next prime is 253456669. The reversal of 253456664 is 466654352.

It is a happy number.

253456664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253456669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15841034 + ... + 15841049.

Almost surely, 2^253456664 is an apocalyptic number.

It is an amenable number.

253456664 is a deficient number, since it is larger than the sum of its proper divisors (221774596).

253456664 is a wasteful number, since it uses less digits than its factorization.

253456664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31682089 (or 31682085 counting only the distinct ones).

The product of its digits is 518400, while the sum is 41.

The square root of 253456664 is about 15920.3223585454. The cubic root of 253456664 is about 632.8506611126.

The spelling of 253456664 in words is "two hundred fifty-three million, four hundred fifty-six thousand, six hundred sixty-four".