2689604 has 24 divisors (see below), whose sum is σ = 5123160. Its totient is φ = 1230336.

The previous prime is 2689601. The next prime is 2689613. The reversal of 2689604 is 4069862.

It can be written as a sum of positive squares in 4 ways, for example, as 1254400 + 1435204 = 1120^2 + 1198^2 .

It is not an unprimeable number, because it can be changed into a prime (2689601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1982 + ... + 3050.

It is an arithmetic number, because the mean of its divisors is an integer number (213465).

2^2689604 is an apocalyptic number.

It is an amenable number.

2689604 is a deficient number, since it is larger than the sum of its proper divisors (2433556).

2689604 is a wasteful number, since it uses less digits than its factorization.

2689604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1127 (or 1125 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 2689604 is about 1640.0012195117. The cubic root of 2689604 is about 139.0687167780.

The spelling of 2689604 in words is "two million, six hundred eighty-nine thousand, six hundred four".