2779679 has 8 divisors (see below), whose sum is σ = 3286560. Its totient is φ = 2300256.

The previous prime is 2779669. The next prime is 2779703. The reversal of 2779679 is 9769772.

2779679 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2779679 - 2⁴ = 2779663 is a prime.

It is a Duffinian number.

2779679 is strictly pandigital in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2779669) 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, 6644 + ... + 7049.

It is an arithmetic number, because the mean of its divisors is an integer number (410820).

2^2779679 is an apocalyptic number.

2779679 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

2779679 is a deficient number, since it is larger than the sum of its proper divisors (506881).

2779679 is a wasteful number, since it uses less digits than its factorization.

2779679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13729.

The product of its digits is 333396, while the sum is 47.

The square root of 2779679 is about 1667.2369357713. The cubic root of 2779679 is about 140.6041746280.

The spelling of 2779679 in words is "two million, seven hundred seventy-nine thousand, six hundred seventy-nine".