2646610645 has 16 divisors (see below), whose sum is σ = 3630781440. Its totient is φ = 1814246784.

The previous prime is 2646610619. The next prime is 2646610669. The reversal of 2646610645 is 5460166462.

It is not a de Polignac number, because 2646610645 - 2⁷ = 2646610517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2646610598 and 2646610607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121884 + ... + 141946.

It is an arithmetic number, because the mean of its divisors is an integer number (226923840).

Almost surely, 2^2646610645 is an apocalyptic number.

It is an amenable number.

2646610645 is a deficient number, since it is larger than the sum of its proper divisors (984170795).

2646610645 is a wasteful number, since it uses less digits than its factorization.

2646610645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23844.

The product of its (nonzero) digits is 207360, while the sum is 40.

The square root of 2646610645 is about 51445.2198459682. The cubic root of 2646610645 is about 1383.2372792775.

The spelling of 2646610645 in words is "two billion, six hundred forty-six million, six hundred ten thousand, six hundred forty-five".