2487645 has 16 divisors (see below), whose sum is σ = 4422720. Its totient is φ = 1326672.

The previous prime is 2487637. The next prime is 2487659. The reversal of 2487645 is 5467842.

2487645 is a `hidden beast` number, since 2 + 4 + 8 + 7 + 645 = 666.

It is not a de Polignac number, because 2487645 - 2³ = 2487637 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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, 9079 + ... + 9348.

It is an arithmetic number, because the mean of its divisors is an integer number (276420).

2^2487645 is an apocalyptic number.

It is an amenable number.

2487645 is a deficient number, since it is larger than the sum of its proper divisors (1935075).

2487645 is a wasteful number, since it uses less digits than its factorization.

2487645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18441 (or 18435 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 2487645 is about 1577.2269969792. The cubic root of 2487645 is about 135.4969339775.

The spelling of 2487645 in words is "two million, four hundred eighty-seven thousand, six hundred forty-five".