2663979 has 16 divisors (see below), whose sum is σ = 3687552. Its totient is φ = 1709568.

The previous prime is 2663977. The next prime is 2663993. The reversal of 2663979 is 9793662.

It is not a de Polignac number, because 2663979 - 2¹ = 2663977 is a prime.

It is a super-2 number, since 2×2663979² = 14193568224882, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2663979.

It is not an unprimeable number, because it can be changed into a prime (2663977) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13707 + ... + 13899.

It is an arithmetic number, because the mean of its divisors is an integer number (230472).

2^2663979 is an apocalyptic number.

2663979 is a deficient number, since it is larger than the sum of its proper divisors (1023573).

2663979 is a wasteful number, since it uses less digits than its factorization.

2663979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346.

The product of its digits is 122472, while the sum is 42.

The square root of 2663979 is about 1632.1700279076. The cubic root of 2663979 is about 138.6256511101.

The spelling of 2663979 in words is "two million, six hundred sixty-three thousand, nine hundred seventy-nine".