2687980 has 12 divisors (see below), whose sum is σ = 5644800. Its totient is φ = 1075184.

The previous prime is 2687969. The next prime is 2687983. The reversal of 2687980 is 897862.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (2687983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67180 + ... + 67219.

It is an arithmetic number, because the mean of its divisors is an integer number (470400).

2^2687980 is an apocalyptic number.

2687980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2687980 is an abundant number, since it is smaller than the sum of its proper divisors (2956820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2687980 is a wasteful number, since it uses less digits than its factorization.

2687980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134408 (or 134406 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 2687980 is about 1639.5060231667. The cubic root of 2687980 is about 139.0407209507.

The spelling of 2687980 in words is "two million, six hundred eighty-seven thousand, nine hundred eighty".