653969253 has 16 divisors (see below), whose sum is σ = 997688960. Its totient is φ = 373260096.

The previous prime is 653969249. The next prime is 653969291. The reversal of 653969253 is 352969356.

It is not a de Polignac number, because 653969253 - 2² = 653969249 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (653969453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 663 + ... + 36171.

It is an arithmetic number, because the mean of its divisors is an integer number (62355560).

Almost surely, 2^653969253 is an apocalyptic number.

It is an amenable number.

653969253 is a deficient number, since it is larger than the sum of its proper divisors (343719707).

653969253 is a wasteful number, since it uses less digits than its factorization.

653969253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36396.

The product of its digits is 1312200, while the sum is 48.

The square root of 653969253 is about 25572.8225466021. The cubic root of 653969253 is about 867.9987705002.

The spelling of 653969253 in words is "six hundred fifty-three million, nine hundred sixty-nine thousand, two hundred fifty-three".