2615616 has 84 divisors (see below), whose sum is σ = 7924800. Its totient is φ = 822528.

The previous prime is 2615593. The next prime is 2615617. The reversal of 2615616 is 6165162.

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 2615616.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2615617) 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, 10825 + ... + 11063.

2^2615616 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 2615616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3962400).

2615616 is an abundant number, since it is smaller than the sum of its proper divisors (5309184).

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

2615616 is a wasteful number, since it uses less digits than its factorization.

2615616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276 (or 263 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 2615616 is about 1617.2866165278. The cubic root of 2615616 is about 137.7816332216.

The spelling of 2615616 in words is "two million, six hundred fifteen thousand, six hundred sixteen".