12664870 has 8 divisors (see below), whose sum is σ = 22796784. Its totient is φ = 5065944.

The previous prime is 12664829. The next prime is 12664871. The reversal of 12664870 is 7846621.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12664871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 633234 + ... + 633253.

It is an arithmetic number, because the mean of its divisors is an integer number (2849598).

Almost surely, 2^12664870 is an apocalyptic number.

12664870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12664870 is a deficient number, since it is larger than the sum of its proper divisors (10131914).

12664870 is a wasteful number, since it uses less digits than its factorization.

12664870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1266494.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 12664870 is about 3558.7736651830. The cubic root of 12664870 is about 233.0953332862.

The spelling of 12664870 in words is "twelve million, six hundred sixty-four thousand, eight hundred seventy".