2605946879 has 8 divisors (see below), whose sum is σ = 2612504832. Its totient is φ = 2599398360.

The previous prime is 2605946803. The next prime is 2605946887. The reversal of 2605946879 is 9786495062.

It is a happy number.

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 2605946879 - 2²⁴ = 2589169663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2605946899) 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, 1023482 + ... + 1026024.

It is an arithmetic number, because the mean of its divisors is an integer number (326563104).

Almost surely, 2^2605946879 is an apocalyptic number.

2605946879 is a deficient number, since it is larger than the sum of its proper divisors (6557953).

2605946879 is a wasteful number, since it uses less digits than its factorization.

2605946879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4717.

The product of its (nonzero) digits is 6531840, while the sum is 56.

The square root of 2605946879 is about 51048.4757754823. The cubic root of 2605946879 is about 1376.1164493161.

The spelling of 2605946879 in words is "two billion, six hundred five million, nine hundred forty-six thousand, eight hundred seventy-nine".