2687870 has 32 divisors (see below), whose sum is σ = 5207328. Its totient is φ = 995328.

The previous prime is 2687869. The next prime is 2687879. The reversal of 2687870 is 787862.

2687870 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2687879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16409 + ... + 16571.

It is an arithmetic number, because the mean of its divisors is an integer number (162729).

2^2687870 is an apocalyptic number.

2687870 is a deficient number, since it is larger than the sum of its proper divisors (2519458).

2687870 is a wasteful number, since it uses less digits than its factorization.

2687870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284.

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 2687870 is about 1639.4724761337. The cubic root of 2687870 is about 139.0388242739.

The spelling of 2687870 in words is "two million, six hundred eighty-seven thousand, eight hundred seventy".