2979647 has 8 divisors (see below), whose sum is σ = 3338832. Its totient is φ = 2635200.

The previous prime is 2979623. The next prime is 2979649. The reversal of 2979647 is 7469792.

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

It is a cyclic number.

It is not a de Polignac number, because 2979647 - 2⁶ = 2979583 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2979598 and 2979607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2979649) 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, 3254 + ... + 4067.

It is an arithmetic number, because the mean of its divisors is an integer number (417354).

2^2979647 is an apocalyptic number.

2979647 is a deficient number, since it is larger than the sum of its proper divisors (359185).

2979647 is a wasteful number, since it uses less digits than its factorization.

2979647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7369.

The product of its digits is 190512, while the sum is 44.

The square root of 2979647 is about 1726.1654034304. The cubic root of 2979647 is about 143.8980599249.

The spelling of 2979647 in words is "two million, nine hundred seventy-nine thousand, six hundred forty-seven".