2687998 has 8 divisors (see below), whose sum is σ = 4044600. Its totient is φ = 1339800.

The previous prime is 2687983. The next prime is 2687999. The reversal of 2687998 is 8997862.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 1228 + ... + 2623.

It is an arithmetic number, because the mean of its divisors is an integer number (505575).

2^2687998 is an apocalyptic number.

2687998 is a deficient number, since it is larger than the sum of its proper divisors (1356602).

2687998 is a wasteful number, since it uses less digits than its factorization.

2687998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4202.

The product of its digits is 435456, while the sum is 49.

The square root of 2687998 is about 1639.5115126159. The cubic root of 2687998 is about 139.0410313111.

The spelling of 2687998 in words is "two million, six hundred eighty-seven thousand, nine hundred ninety-eight".