2487685 has 4 divisors (see below), whose sum is σ = 2985228. Its totient is φ = 1990144.

The previous prime is 2487677. The next prime is 2487691. The reversal of 2487685 is 5867842.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 408321 + 2079364 = 639^2 + 1442^2 .

It is a cyclic number.

It is not a de Polignac number, because 2487685 - 2³ = 2487677 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a Duffinian number.

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, 248764 + ... + 248773.

It is an arithmetic number, because the mean of its divisors is an integer number (746307).

2^2487685 is an apocalyptic number.

It is an amenable number.

2487685 is a deficient number, since it is larger than the sum of its proper divisors (497543).

2487685 is an equidigital number, since it uses as much as digits as its factorization.

2487685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497542.

The product of its digits is 107520, while the sum is 40.

The square root of 2487685 is about 1577.2396774111. The cubic root of 2487685 is about 135.4976602130.

The spelling of 2487685 in words is "two million, four hundred eighty-seven thousand, six hundred eighty-five".