12664782 has 32 divisors (see below), whose sum is σ = 30310560. Its totient is φ = 3896640.

The previous prime is 12664781. The next prime is 12664807. The reversal of 12664782 is 28746621.

12664782 is a `hidden beast` number, since 1 + 2 + 6 + 647 + 8 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12664781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8319 + ... + 9722.

It is an arithmetic number, because the mean of its divisors is an integer number (947205).

Almost surely, 2^12664782 is an apocalyptic number.

12664782 is an abundant number, since it is smaller than the sum of its proper divisors (17645778).

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

12664782 is a wasteful number, since it uses less digits than its factorization.

12664782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18065 (or 18059 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 12664782 is about 3558.7613013519. The cubic root of 12664782 is about 233.0947934086.

The spelling of 12664782 in words is "twelve million, six hundred sixty-four thousand, seven hundred eighty-two".