2640984 has 32 divisors (see below), whose sum is σ = 6991920. Its totient is φ = 828416.

The previous prime is 2640973. The next prime is 2640997. The reversal of 2640984 is 4890462.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a nialpdrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2829 + ... + 3644.

2^2640984 is an apocalyptic number.

2640984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2640984 is an abundant number, since it is smaller than the sum of its proper divisors (4350936).

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

2640984 is a wasteful number, since it uses less digits than its factorization.

2640984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6499 (or 6495 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 2640984 is about 1625.1104577843. The cubic root of 2640984 is about 138.2256338219.

The spelling of 2640984 in words is "two million, six hundred forty thousand, nine hundred eighty-four".