653353672 has 8 divisors (see below), whose sum is σ = 1225038150. Its totient is φ = 326676832.

The previous prime is 653353667. The next prime is 653353697. The reversal of 653353672 is 276353356.

It can be written as a sum of positive squares in only one way, i.e., 647906116 + 5447556 = 25454^2 + 2334^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40834597 + ... + 40834612.

Almost surely, 2^653353672 is an apocalyptic number.

It is an amenable number.

653353672 is a deficient number, since it is larger than the sum of its proper divisors (571684478).

653353672 is a wasteful number, since it uses less digits than its factorization.

653353672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81669215 (or 81669211 counting only the distinct ones).

The product of its digits is 340200, while the sum is 40.

The square root of 653353672 is about 25560.7838690444. The cubic root of 653353672 is about 867.7263360347.

The spelling of 653353672 in words is "six hundred fifty-three million, three hundred fifty-three thousand, six hundred seventy-two".