12690879 has 8 divisors (see below), whose sum is σ = 17811840. Its totient is φ = 8015256.

The previous prime is 12690859. The next prime is 12690883. The reversal of 12690879 is 97809621.

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

It is not a de Polignac number, because 12690879 - 2¹² = 12686783 is a prime.

It is a super-2 number, since 2×12690879² = 322116819585282, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12690879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12690829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111267 + ... + 111380.

It is an arithmetic number, because the mean of its divisors is an integer number (2226480).

Almost surely, 2^12690879 is an apocalyptic number.

12690879 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

12690879 is a deficient number, since it is larger than the sum of its proper divisors (5120961).

12690879 is a wasteful number, since it uses less digits than its factorization.

12690879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222669.

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 12690879 is about 3562.4259992314. The cubic root of 12690879 is about 233.2547883022.

The spelling of 12690879 in words is "twelve million, six hundred ninety thousand, eight hundred seventy-nine".