654649120 has 48 divisors (see below), whose sum is σ = 1562590008. Its totient is φ = 259153920.

The previous prime is 654649117. The next prime is 654649129. The reversal of 654649120 is 21946456.

It can be written as a sum of positive squares in 4 ways, for example, as 329640336 + 325008784 = 18156^2 + 18028^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 654649120.

It is not an unprimeable number, because it can be changed into a prime (654649129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5571 + ... + 36610.

Almost surely, 2^654649120 is an apocalyptic number.

It is an amenable number.

654649120 is an abundant number, since it is smaller than the sum of its proper divisors (907940888).

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

654649120 is a wasteful number, since it uses less digits than its factorization.

654649120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42293 (or 42285 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 654649120 is about 25586.1118578029. Note that the first 3 decimals coincide. The cubic root of 654649120 is about 868.2994570833.

The spelling of 654649120 in words is "six hundred fifty-four million, six hundred forty-nine thousand, one hundred twenty".