12600664 has 8 divisors (see below), whose sum is σ = 23626260. Its totient is φ = 6300328.

The previous prime is 12600661. The next prime is 12600691. The reversal of 12600664 is 46600621.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12600661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 787534 + ... + 787549.

Almost surely, 2^12600664 is an apocalyptic number.

It is an amenable number.

12600664 is a deficient number, since it is larger than the sum of its proper divisors (11025596).

12600664 is a wasteful number, since it uses less digits than its factorization.

12600664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1575089 (or 1575085 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 12600664 is about 3549.7413990318. The cubic root of 12600664 is about 232.7007646551.

The spelling of 12600664 in words is "twelve million, six hundred thousand, six hundred sixty-four".