2681979 has 8 divisors (see below), whose sum is σ = 3619392. Its totient is φ = 1766280.

The previous prime is 2681969. The next prime is 2681989. The reversal of 2681979 is 9791862.

It is an interprime number because it is at equal distance from previous prime (2681969) and next prime (2681989).

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

It is not a de Polignac number, because 2681979 - 2⁹ = 2681467 is a prime.

It is a super-2 number, since 2×2681979² = 14386022712882, 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 2681979.

It is not an unprimeable number, because it can be changed into a prime (2681929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5137 + ... + 5634.

It is an arithmetic number, because the mean of its divisors is an integer number (452424).

2^2681979 is an apocalyptic number.

2681979 is a deficient number, since it is larger than the sum of its proper divisors (937413).

2681979 is a wasteful number, since it uses less digits than its factorization.

2681979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10857.

The product of its digits is 54432, while the sum is 42.

The square root of 2681979 is about 1637.6748761583. The cubic root of 2681979 is about 138.9371729249.

The spelling of 2681979 in words is "two million, six hundred eighty-one thousand, nine hundred seventy-nine".