653436672 has 72 divisors (see below), whose sum is σ = 1987552896. Its totient is φ = 186694656.

The previous prime is 653436659. The next prime is 653436689. The reversal of 653436672 is 276634356.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 55398 + ... + 66149.

Almost surely, 2^653436672 is an apocalyptic number.

It is an amenable number.

653436672 is an abundant number, since it is smaller than the sum of its proper divisors (1334116224).

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

653436672 is a wasteful number, since it uses less digits than its factorization.

653436672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121573 (or 121559 counting only the distinct ones).

The product of its digits is 544320, while the sum is 42.

The square root of 653436672 is about 25562.4073983653. The cubic root of 653436672 is about 867.7630788890.

The spelling of 653436672 in words is "six hundred fifty-three million, four hundred thirty-six thousand, six hundred seventy-two".