4890645 has 32 divisors (see below), whose sum is σ = 9210240. Its totient is φ = 2453760.

The previous prime is 4890637. The next prime is 4890659. The reversal of 4890645 is 5460984.

4890645 is a `hidden beast` number, since 4 + 8 + 9 + 0 + 645 = 666.

It is not a de Polignac number, because 4890645 - 2³ = 4890637 is a prime.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1230 + ... + 3360.

It is an arithmetic number, because the mean of its divisors is an integer number (287820).

Almost surely, 2^4890645 is an apocalyptic number.

4890645 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4890645 is a deficient number, since it is larger than the sum of its proper divisors (4319595).

4890645 is a wasteful number, since it uses less digits than its factorization.

4890645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2162 (or 2156 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 4890645 is about 2211.4802734820. The cubic root of 4890645 is about 169.7417647942.

The spelling of 4890645 in words is "four million, eight hundred ninety thousand, six hundred forty-five".