653466968 has 64 divisors (see below), whose sum is σ = 1546110720. Its totient is φ = 251510400.

The previous prime is 653466959. The next prime is 653466971. The reversal of 653466968 is 869664356.

It is a Cunningham number, because it is equal to 25563²-1.

It is a super-2 number, since 2×653466968² = 854038156534226048, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44738 + ... + 57518.

It is an arithmetic number, because the mean of its divisors is an integer number (24157980).

Almost surely, 2^653466968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 653466968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (773055360).

653466968 is an abundant number, since it is smaller than the sum of its proper divisors (892643752).

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

653466968 is a wasteful number, since it uses less digits than its factorization.

653466968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12888 (or 12884 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 53.

The square root of 653466968 is about 25562.9999804405. Note that the first 4 decimals coincide. The cubic root of 653466968 is about 867.7764896984.

The spelling of 653466968 in words is "six hundred fifty-three million, four hundred sixty-six thousand, nine hundred sixty-eight".