2687992 has 8 divisors (see below), whose sum is σ = 5040000. Its totient is φ = 1343992.

The previous prime is 2687983. The next prime is 2687999. The reversal of 2687992 is 2997862.

It is a happy number.

2687992 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 167992 + ... + 168007.

It is an arithmetic number, because the mean of its divisors is an integer number (630000).

2^2687992 is an apocalyptic number.

It is an amenable number.

2687992 is a deficient number, since it is larger than the sum of its proper divisors (2352008).

2687992 is a wasteful number, since it uses less digits than its factorization.

2687992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336005 (or 336001 counting only the distinct ones).

The product of its digits is 108864, while the sum is 43.

The square root of 2687992 is about 1639.5096828015. The cubic root of 2687992 is about 139.0409278578.

The spelling of 2687992 in words is "two million, six hundred eighty-seven thousand, nine hundred ninety-two".