2611646645 has 8 divisors (see below), whose sum is σ = 3135557304. Its totient is φ = 2088263104.

The previous prime is 2611646633. The next prime is 2611646651. The reversal of 2611646645 is 5466461162.

2611646645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 163277284 + 2448369361 = 12778^2 + 49481^2 .

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 2611646645 - 2⁴ = 2611646629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120794 + ... + 140763.

It is an arithmetic number, because the mean of its divisors is an integer number (391944663).

Almost surely, 2^2611646645 is an apocalyptic number.

It is an amenable number.

2611646645 is a deficient number, since it is larger than the sum of its proper divisors (523910659).

2611646645 is a wasteful number, since it uses less digits than its factorization.

2611646645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263559.

The product of its digits is 207360, while the sum is 41.

The square root of 2611646645 is about 51104.2722773742. The cubic root of 2611646645 is about 1377.1190062303.

The spelling of 2611646645 in words is "two billion, six hundred eleven million, six hundred forty-six thousand, six hundred forty-five".