2305615664 has 20 divisors (see below), whose sum is σ = 4873233480. Its totient is φ = 1048007040.

The previous prime is 2305615661. The next prime is 2305615673. The reversal of 2305615664 is 4665165032.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2305615661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6549869 + ... + 6550220.

It is an arithmetic number, because the mean of its divisors is an integer number (243661674).

Almost surely, 2^2305615664 is an apocalyptic number.

It is an amenable number.

2305615664 is an abundant number, since it is smaller than the sum of its proper divisors (2567617816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2305615664 is a wasteful number, since it uses less digits than its factorization.

2305615664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13100108 (or 13100102 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 38.

The square root of 2305615664 is about 48016.8268839164. The cubic root of 2305615664 is about 1321.0795545621.

The spelling of 2305615664 in words is "two billion, three hundred five million, six hundred fifteen thousand, six hundred sixty-four".