2646760409 has 16 divisors (see below), whose sum is σ = 2719267200. Its totient is φ = 2575537536.

The previous prime is 2646760393. The next prime is 2646760421. The reversal of 2646760409 is 9040676462.

It is not a de Polignac number, because 2646760409 - 2⁴ = 2646760393 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2646760409.

It is not an unprimeable number, because it can be changed into a prime (2646760469) 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, 1640087 + ... + 1641699.

It is an arithmetic number, because the mean of its divisors is an integer number (169954200).

Almost surely, 2^2646760409 is an apocalyptic number.

It is an amenable number.

2646760409 is a deficient number, since it is larger than the sum of its proper divisors (72506791).

2646760409 is a wasteful number, since it uses less digits than its factorization.

2646760409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1984.

The product of its (nonzero) digits is 435456, while the sum is 44.

The square root of 2646760409 is about 51446.6753930708. The cubic root of 2646760409 is about 1383.2633699104.

The spelling of 2646760409 in words is "two billion, six hundred forty-six million, seven hundred sixty thousand, four hundred nine".