2664979 has 4 divisors (see below), whose sum is σ = 2675376. Its totient is φ = 2654584.

The previous prime is 2664967. The next prime is 2664989. The reversal of 2664979 is 9794662.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9794662 = 2 ⋅4897331.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2664979 is a prime.

It is a super-2 number, since 2×2664979² = 14204226140882, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2²¹ + 6⁷ + 6⁷ + 4⁶ + 9³ + 7⁴ + 9³ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2664929) 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, 4804 + ... + 5329.

It is an arithmetic number, because the mean of its divisors is an integer number (668844).

2^2664979 is an apocalyptic number.

2664979 is a deficient number, since it is larger than the sum of its proper divisors (10397).

2664979 is a wasteful number, since it uses less digits than its factorization.

2664979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10396.

The product of its digits is 163296, while the sum is 43.

The square root of 2664979 is about 1632.4763397979. The cubic root of 2664979 is about 138.6429946288.

The spelling of 2664979 in words is "two million, six hundred sixty-four thousand, nine hundred seventy-nine".