12816670 has 8 divisors (see below), whose sum is σ = 23070024. Its totient is φ = 5126664.

The previous prime is 12816667. The next prime is 12816677. The reversal of 12816670 is 7661821.

12816670 = 791² + 792² + ... + 810².

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 (12816677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 640824 + ... + 640843.

It is an arithmetic number, because the mean of its divisors is an integer number (2883753).

Almost surely, 2^12816670 is an apocalyptic number.

12816670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12816670 is a deficient number, since it is larger than the sum of its proper divisors (10253354).

12816670 is a wasteful number, since it uses less digits than its factorization.

12816670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1281674.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 12816670 is about 3580.0377092986. The cubic root of 12816670 is about 234.0229237045.

The spelling of 12816670 in words is "twelve million, eight hundred sixteen thousand, six hundred seventy".