12664777 has 8 divisors (see below), whose sum is σ = 13104000. Its totient is φ = 12231840.

The previous prime is 12664741. The next prime is 12664781. The reversal of 12664777 is 77746621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12664777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12664277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2724 + ... + 5722.

It is an arithmetic number, because the mean of its divisors is an integer number (1638000).

Almost surely, 2^12664777 is an apocalyptic number.

It is an amenable number.

12664777 is a deficient number, since it is larger than the sum of its proper divisors (439223).

12664777 is a wasteful number, since it uses less digits than its factorization.

12664777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3143.

The product of its digits is 98784, while the sum is 40.

The square root of 12664777 is about 3558.7605988602. The cubic root of 12664777 is about 233.0947627337.

The spelling of 12664777 in words is "twelve million, six hundred sixty-four thousand, seven hundred seventy-seven".