2973645 has 16 divisors (see below), whose sum is σ = 5286720. Its totient is φ = 1585872.

The previous prime is 2973617. The next prime is 2973667. The reversal of 2973645 is 5463792.

2973645 is a `hidden beast` number, since 2 + 9 + 7 + 3 + 645 = 666.

It is not a de Polignac number, because 2973645 - 2⁷ = 2973517 is a prime.

It is a super-3 number, since 3×2973645³ = 78883943905230933375, which contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10879 + ... + 11148.

It is an arithmetic number, because the mean of its divisors is an integer number (330420).

2^2973645 is an apocalyptic number.

It is an amenable number.

2973645 is a deficient number, since it is larger than the sum of its proper divisors (2313075).

2973645 is a wasteful number, since it uses less digits than its factorization.

2973645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22041 (or 22035 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 2973645 is about 1724.4259914534. The cubic root of 2973645 is about 143.8013754613.

The spelling of 2973645 in words is "two million, nine hundred seventy-three thousand, six hundred forty-five".