654957988 has 12 divisors (see below), whose sum is σ = 1150934092. Its totient is φ = 326119680.

The previous prime is 654957977. The next prime is 654957991. The reversal of 654957988 is 889759456.

654957988 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 602800704 + 52157284 = 24552^2 + 7222^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 338745 + ... + 340672.

Almost surely, 2^654957988 is an apocalyptic number.

It is an amenable number.

654957988 is a deficient number, since it is larger than the sum of its proper divisors (495976104).

654957988 is a wasteful number, since it uses less digits than its factorization.

654957988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679662 (or 679660 counting only the distinct ones).

The product of its digits is 21772800, while the sum is 61.

The square root of 654957988 is about 25592.1469986400. The cubic root of 654957988 is about 868.4359921836.

The spelling of 654957988 in words is "six hundred fifty-four million, nine hundred fifty-seven thousand, nine hundred eighty-eight".