12998017 has 4 divisors (see below), whose sum is σ = 13013716. Its totient is φ = 12982320.

The previous prime is 12997987. The next prime is 12998053. The reversal of 12998017 is 71089921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71089921 = 7 ⋅10155703.

It can be written as a sum of positive squares in 2 ways, for example, as 8520561 + 4477456 = 2919^2 + 2116^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12998017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12998057) 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, 6534 + ... + 8287.

It is an arithmetic number, because the mean of its divisors is an integer number (3253429).

Almost surely, 2^12998017 is an apocalyptic number.

It is an amenable number.

12998017 is a deficient number, since it is larger than the sum of its proper divisors (15699).

12998017 is an equidigital number, since it uses as much as digits as its factorization.

12998017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15698.

The product of its (nonzero) digits is 9072, while the sum is 37.

The square root of 12998017 is about 3605.2762723542. The cubic root of 12998017 is about 235.1215125316.

It can be divided in two parts, 1299 and 8017, that added together give a triangular number (9316 = T₁₃₆).

The spelling of 12998017 in words is "twelve million, nine hundred ninety-eight thousand, seventeen".