2687997 has 16 divisors (see below), whose sum is σ = 3893120. Its totient is φ = 1639872.

The previous prime is 2687983. The next prime is 2687999. The reversal of 2687997 is 7997862.

It is not a de Polignac number, because 2687997 - 2⁷ = 2687869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2687999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5904 + ... + 6342.

It is an arithmetic number, because the mean of its divisors is an integer number (243320).

2^2687997 is an apocalyptic number.

It is an amenable number.

2687997 is a deficient number, since it is larger than the sum of its proper divisors (1205123).

2687997 is a wasteful number, since it uses less digits than its factorization.

2687997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612.

The product of its digits is 381024, while the sum is 48.

The square root of 2687997 is about 1639.5112076470. The cubic root of 2687997 is about 139.0410140689.

The spelling of 2687997 in words is "two million, six hundred eighty-seven thousand, nine hundred ninety-seven".