653533680 has 40 divisors (see below), whose sum is σ = 2025955152. Its totient is φ = 174275584.

The previous prime is 653533679. The next prime is 653533691. The reversal of 653533680 is 86335356.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1361289 + ... + 1361768.

Almost surely, 2^653533680 is an apocalyptic number.

653533680 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

653533680 is an abundant number, since it is smaller than the sum of its proper divisors (1372421472).

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

653533680 is a wasteful number, since it uses less digits than its factorization.

653533680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2723073 (or 2723067 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 39.

The square root of 653533680 is about 25564.3048018130. The cubic root of 653533680 is about 867.8060189315.

The spelling of 653533680 in words is "six hundred fifty-three million, five hundred thirty-three thousand, six hundred eighty".