650689884 has 144 divisors (see below), whose sum is σ = 1879914400. Its totient is φ = 189236736.

The previous prime is 650689883. The next prime is 650689891. The reversal of 650689884 is 488986056.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 650689884.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650689883) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1502532 + ... + 1502964.

Almost surely, 2^650689884 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 650689884, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (939957200).

650689884 is an abundant number, since it is smaller than the sum of its proper divisors (1229224516).

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

650689884 is a wasteful number, since it uses less digits than its factorization.

650689884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501 (or 470 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 54.

The square root of 650689884 is about 25508.6237182644. The cubic root of 650689884 is about 866.5454608276.

The spelling of 650689884 in words is "six hundred fifty million, six hundred eighty-nine thousand, eight hundred eighty-four".