2305664 has 16 divisors (see below), whose sum is σ = 4593570. Its totient is φ = 1152768.

The previous prime is 2305651. The next prime is 2305691. The reversal of 2305664 is 4665032.

It can be written as a sum of positive squares in only one way, i.e., 1459264 + 846400 = 1208^2 + 920^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8879 + ... + 9134.

2^2305664 is an apocalyptic number.

It is an amenable number.

2305664 is a deficient number, since it is larger than the sum of its proper divisors (2287906).

2305664 is an equidigital number, since it uses as much as digits as its factorization.

2305664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18027 (or 18015 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 2305664 is about 1518.4413060767. The cubic root of 2305664 is about 132.1088786407.

The spelling of 2305664 in words is "two million, three hundred five thousand, six hundred sixty-four".