2145604 has 24 divisors (see below), whose sum is σ = 4021920. Its totient is φ = 998016.

The previous prime is 2145551. The next prime is 2145617. The reversal of 2145604 is 4065412.

It is a super-3 number, since 3×2145604³ = 29632614090333926592, which contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9339 + ... + 9565.

It is an arithmetic number, because the mean of its divisors is an integer number (167580).

2^2145604 is an apocalyptic number.

It is an amenable number.

2145604 is a deficient number, since it is larger than the sum of its proper divisors (1876316).

2145604 is a wasteful number, since it uses less digits than its factorization.

2145604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387 (or 385 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 2145604 is about 1464.7880392739. The cubic root of 2145604 is about 128.9782628678.

The spelling of 2145604 in words is "two million, one hundred forty-five thousand, six hundred four".