12970689 has 16 divisors (see below), whose sum is σ = 18133632. Its totient is φ = 8231168.

The previous prime is 12970681. The next prime is 12970691. The reversal of 12970689 is 98607921.

12970689 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12970689 - 2³ = 12970681 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12970689.

It is not an unprimeable number, because it can be changed into a prime (12970681) 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, 21577 + ... + 22169.

It is an arithmetic number, because the mean of its divisors is an integer number (1133352).

Almost surely, 2^12970689 is an apocalyptic number.

It is an amenable number.

12970689 is a deficient number, since it is larger than the sum of its proper divisors (5162943).

12970689 is a wasteful number, since it uses less digits than its factorization.

12970689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 936.

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

The square root of 12970689 is about 3601.4842773501. The cubic root of 12970689 is about 234.9566179162.

It can be divided in two parts, 129706 and 89, that added together give a triangular number (129795 = T₅₀₉).

The spelling of 12970689 in words is "twelve million, nine hundred seventy thousand, six hundred eighty-nine".