12601664 has 14 divisors (see below), whose sum is σ = 25006554. Its totient is φ = 6300800.

The previous prime is 12601663. The next prime is 12601691. The reversal of 12601664 is 46610621.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10291264 + 2310400 = 3208^2 + 1520^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12601663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98387 + ... + 98514.

Almost surely, 2^12601664 is an apocalyptic number.

It is an amenable number.

12601664 is a deficient number, since it is larger than the sum of its proper divisors (12404890).

12601664 is an equidigital number, since it uses as much as digits as its factorization.

12601664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196913 (or 196903 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 12601664 is about 3549.8822515684. The cubic root of 12601664 is about 232.7069202727.

The spelling of 12601664 in words is "twelve million, six hundred one thousand, six hundred sixty-four".