654360640 has 112 divisors (see below), whose sum is σ = 1629460800. Its totient is φ = 249976832.

The previous prime is 654360607. The next prime is 654360643. The reversal of 654360640 is 46063456.

It is a junction number, because it is equal to n+sod(n) for n = 654360596 and 654360605.

It is not an unprimeable number, because it can be changed into a prime (654360643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 992631 + ... + 993289.

Almost surely, 2^654360640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 654360640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (814730400).

654360640 is an abundant number, since it is smaller than the sum of its proper divisors (975100160).

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

654360640 is a wasteful number, since it uses less digits than its factorization.

654360640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812 (or 802 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 34.

The square root of 654360640 is about 25580.4738032742. The cubic root of 654360640 is about 868.1718957062.

The spelling of 654360640 in words is "six hundred fifty-four million, three hundred sixty thousand, six hundred forty".