649941516 has 96 divisors (see below), whose sum is σ = 1945825280. Its totient is φ = 183762432.

The previous prime is 649941437. The next prime is 649941529. The reversal of 649941516 is 615149946.

It is a happy number.

649941516 is a `hidden beast` number, since 6 + 4 + 99 + 41 + 516 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68901 + ... + 77763.

Almost surely, 2^649941516 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 649941516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (972912640).

649941516 is an abundant number, since it is smaller than the sum of its proper divisors (1295883764).

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

649941516 is a wasteful number, since it uses less digits than its factorization.

649941516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8980 (or 8972 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 649941516 is about 25493.9505765584. The cubic root of 649941516 is about 866.2131244961.

The spelling of 649941516 in words is "six hundred forty-nine million, nine hundred forty-one thousand, five hundred sixteen".