650166516 has 72 divisors (see below), whose sum is σ = 1699192040. Its totient is φ = 209454336.

The previous prime is 650166511. The next prime is 650166527. The reversal of 650166516 is 615661056.

It can be written as a sum of positive squares in 4 ways, for example, as 71571600 + 578594916 = 8460^2 + 24054^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650166511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 207570 + ... + 210678.

Almost surely, 2^650166516 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 650166516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (849596020).

650166516 is an abundant number, since it is smaller than the sum of its proper divisors (1049025524).

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

650166516 is a wasteful number, since it uses less digits than its factorization.

650166516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3313 (or 3308 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 650166516 is about 25498.3630062794. The cubic root of 650166516 is about 866.3130696257.

The spelling of 650166516 in words is "six hundred fifty million, one hundred sixty-six thousand, five hundred sixteen".