615615616 has 96 divisors (see below), whose sum is σ = 1556524080. Its totient is φ = 239823360.

The previous prime is 615615613. The next prime is 615615647. The reversal of 615615616 is 616516516.

It is not an unprimeable number, because it can be changed into a prime (615615613) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64531 + ... + 73453.

Almost surely, 2^615615616 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 615615616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (778262040).

615615616 is an abundant number, since it is smaller than the sum of its proper divisors (940908464).

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

615615616 is a wasteful number, since it uses less digits than its factorization.

615615616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8962 (or 8943 counting only the distinct ones).

The product of its digits is 32400, while the sum is 37.

The square root of 615615616 is about 24811.6024472423. The cubic root of 615615616 is about 850.6871564505.

The spelling of 615615616 in words is "six hundred fifteen million, six hundred fifteen thousand, six hundred sixteen".