2798664 has 32 divisors (see below), whose sum is σ = 7633440. Its totient is φ = 848000.

The previous prime is 2798651. The next prime is 2798669. The reversal of 2798664 is 4668972.

It is not an unprimeable number, because it can be changed into a prime (2798669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5037 + ... + 5564.

It is an arithmetic number, because the mean of its divisors is an integer number (238545).

2^2798664 is an apocalyptic number.

2798664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2798664 is an abundant number, since it is smaller than the sum of its proper divisors (4834776).

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

2798664 is a wasteful number, since it uses less digits than its factorization.

2798664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10621 (or 10617 counting only the distinct ones).

The product of its digits is 145152, while the sum is 42.

The square root of 2798664 is about 1672.9207990817. The cubic root of 2798664 is about 140.9235539533.

The spelling of 2798664 in words is "two million, seven hundred ninety-eight thousand, six hundred sixty-four".