12970887 has 4 divisors (see below), whose sum is σ = 17294520. Its totient is φ = 8647256.

The previous prime is 12970879. The next prime is 12970889. The reversal of 12970887 is 78807921.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12970887 - 2³ = 12970879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12970889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2161812 + ... + 2161817.

It is an arithmetic number, because the mean of its divisors is an integer number (4323630).

Almost surely, 2^12970887 is an apocalyptic number.

12970887 is a deficient number, since it is larger than the sum of its proper divisors (4323633).

12970887 is an equidigital number, since it uses as much as digits as its factorization.

12970887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4323632.

The product of its (nonzero) digits is 56448, while the sum is 42.

The square root of 12970887 is about 3601.5117659116. The cubic root of 12970887 is about 234.9578134624.

It can be divided in two parts, 129708 and 87, that added together give a triangular number (129795 = T₅₀₉).

The spelling of 12970887 in words is "twelve million, nine hundred seventy thousand, eight hundred eighty-seven".