654650880 has 320 divisors, whose sum is σ = 2309852160. Its totient is φ = 157188096.

The previous prime is 654650851. The next prime is 654650881. The reversal of 654650880 is 88056456.

It is a tau number, because it is divible by the number of its divisors (320).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654650881) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7887319 + ... + 7887401.

It is an arithmetic number, because the mean of its divisors is an integer number (7218288).

Almost surely, 2^654650880 is an apocalyptic number.

654650880 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 654650880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1154926080).

654650880 is an abundant number, since it is smaller than the sum of its proper divisors (1655201280).

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

654650880 is a wasteful number, since it uses less digits than its factorization.

654650880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201 (or 185 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 42.

The square root of 654650880 is about 25586.1462514385. The cubic root of 654650880 is about 868.3002352130.

The spelling of 654650880 in words is "six hundred fifty-four million, six hundred fifty thousand, eight hundred eighty".