654625650 has 96 divisors (see below), whose sum is σ = 1887022080. Its totient is φ = 147078720.

The previous prime is 654625637. The next prime is 654625661. The reversal of 654625650 is 56526456.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 654625599 and 654625608.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 56667 + ... + 67233.

It is an arithmetic number, because the mean of its divisors is an integer number (19656480).

Almost surely, 2^654625650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 654625650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (943511040).

654625650 is an abundant number, since it is smaller than the sum of its proper divisors (1232396430).

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

654625650 is a wasteful number, since it uses less digits than its factorization.

654625650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10648 (or 10643 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 39.

The square root of 654625650 is about 25585.6532064358. The cubic root of 654625650 is about 868.2890804143.

The spelling of 654625650 in words is "six hundred fifty-four million, six hundred twenty-five thousand, six hundred fifty".