12750664 has 8 divisors (see below), whose sum is σ = 23907510. Its totient is φ = 6375328.

The previous prime is 12750659. The next prime is 12750701. The reversal of 12750664 is 46605721.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 9253764 + 3496900 = 3042^2 + 1870^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 796909 + ... + 796924.

Almost surely, 2^12750664 is an apocalyptic number.

It is an amenable number.

12750664 is a deficient number, since it is larger than the sum of its proper divisors (11156846).

12750664 is a wasteful number, since it uses less digits than its factorization.

12750664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1593839 (or 1593835 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 12750664 is about 3570.8071916585. The cubic root of 12750664 is about 233.6204918065.

The spelling of 12750664 in words is "twelve million, seven hundred fifty thousand, six hundred sixty-four".