2187604 has 12 divisors (see below), whose sum is σ = 3839584. Its totient is φ = 1090584.

The previous prime is 2187587. The next prime is 2187613. The reversal of 2187604 is 4067812.

It is a super-2 number, since 2×2187604² = 9571222521632, which contains 22 as substring.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1387 + ... + 2509.

2^2187604 is an apocalyptic number.

It is an amenable number.

2187604 is a deficient number, since it is larger than the sum of its proper divisors (1651980).

2187604 is a wasteful number, since it uses less digits than its factorization.

2187604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1614 (or 1612 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 2187604 is about 1479.0551037740. The cubic root of 2187604 is about 129.8144097304.

The spelling of 2187604 in words is "two million, one hundred eighty-seven thousand, six hundred four".