12207664 has 60 divisors (see below), whose sum is σ = 28752624. Its totient is φ = 4996992.

The previous prime is 12207653. The next prime is 12207677. The reversal of 12207664 is 46670221.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17694 + ... + 18370.

Almost surely, 2^12207664 is an apocalyptic number.

12207664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12207664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14376312).

12207664 is an abundant number, since it is smaller than the sum of its proper divisors (16544960).

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

12207664 is a wasteful number, since it uses less digits than its factorization.

12207664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722 (or 709 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 12207664 is about 3493.9467654788. The cubic root of 12207664 is about 230.2559469573.

Adding to 12207664 its reverse (46670221), we get a palindrome (58877885).

The spelling of 12207664 in words is "twelve million, two hundred seven thousand, six hundred sixty-four".