2720979 has 16 divisors (see below), whose sum is σ = 4060800. Its totient is φ = 1800648.

The previous prime is 2720953. The next prime is 2720981. The reversal of 2720979 is 9790272.

It is not a de Polignac number, because 2720979 - 2⁸ = 2720723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2720999) 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, 4552 + ... + 5114.

It is an arithmetic number, because the mean of its divisors is an integer number (253800).

2^2720979 is an apocalyptic number.

2720979 is a deficient number, since it is larger than the sum of its proper divisors (1339821).

2720979 is a wasteful number, since it uses less digits than its factorization.

2720979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751 (or 745 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 36.

The square root of 2720979 is about 1649.5390265162. The cubic root of 2720979 is about 139.6073863849.

The spelling of 2720979 in words is "two million, seven hundred twenty thousand, nine hundred seventy-nine".