2613664 has 12 divisors (see below), whose sum is σ = 5145714. Its totient is φ = 1306816.

The previous prime is 2613649. The next prime is 2613671. The reversal of 2613664 is 4663162.

It can be written as a sum of positive squares in only one way, i.e., 2371600 + 242064 = 1540^2 + 492^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40807 + ... + 40870.

2^2613664 is an apocalyptic number.

It is an amenable number.

2613664 is a deficient number, since it is larger than the sum of its proper divisors (2532050).

2613664 is an equidigital number, since it uses as much as digits as its factorization.

2613664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81687 (or 81679 counting only the distinct ones).

The product of its digits is 5184, while the sum is 28.

The square root of 2613664 is about 1616.6830239722. The cubic root of 2613664 is about 137.7473498150.

The spelling of 2613664 in words is "two million, six hundred thirteen thousand, six hundred sixty-four".