2515664 has 10 divisors (see below), whose sum is σ = 4874130. Its totient is φ = 1257824.

The previous prime is 2515651. The next prime is 2515673. The reversal of 2515664 is 4665152.

It can be written as a sum of positive squares in only one way, i.e., 1669264 + 846400 = 1292^2 + 920^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78599 + ... + 78630.

It is an arithmetic number, because the mean of its divisors is an integer number (487413).

2^2515664 is an apocalyptic number.

It is an amenable number.

2515664 is a deficient number, since it is larger than the sum of its proper divisors (2358466).

2515664 is a wasteful number, since it uses less digits than its factorization.

2515664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157237 (or 157231 counting only the distinct ones).

The product of its digits is 7200, while the sum is 29.

The square root of 2515664 is about 1586.0844870309. The cubic root of 2515664 is about 136.0037484549.

The spelling of 2515664 in words is "two million, five hundred fifteen thousand, six hundred sixty-four".