654589680 has 80 divisors (see below), whose sum is σ = 2072438784. Its totient is φ = 170840320.

The previous prime is 654589679. The next prime is 654589693. The reversal of 654589680 is 86985456.

It is a tau number, because it is divible by the number of its divisors (80).

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, 17736 + ... + 40295.

Almost surely, 2^654589680 is an apocalyptic number.

654589680 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

654589680 is an abundant number, since it is smaller than the sum of its proper divisors (1417849104).

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

654589680 is a wasteful number, since it uses less digits than its factorization.

654589680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58094 (or 58088 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 51.

The square root of 654589680 is about 25584.9502637781. The cubic root of 654589680 is about 868.2731767039.

The spelling of 654589680 in words is "six hundred fifty-four million, five hundred eighty-nine thousand, six hundred eighty".