2601616 has 10 divisors (see below), whose sum is σ = 5040662. Its totient is φ = 1300800.

The previous prime is 2601607. The next prime is 2601617. The reversal of 2601616 is 6161062.

It can be written as a sum of positive squares in only one way, i.e., 2560000 + 41616 = 1600^2 + 204^2 .

It is a super-2 number, since 2×2601616² = 13536811622912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2601617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81285 + ... + 81316.

2^2601616 is an apocalyptic number.

It is an amenable number.

2601616 is a deficient number, since it is larger than the sum of its proper divisors (2439046).

2601616 is a wasteful number, since it uses less digits than its factorization.

2601616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162609 (or 162603 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 2601616 is about 1612.9525721484. The cubic root of 2601616 is about 137.5353694135.

Adding to 2601616 its reverse (6161062), we get a palindrome (8762678).

The spelling of 2601616 in words is "two million, six hundred one thousand, six hundred sixteen".