13870669 has 4 divisors (see below), whose sum is σ = 14209020. Its totient is φ = 13532320.

The previous prime is 13870667. The next prime is 13870693. The reversal of 13870669 is 96607831.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6916900 + 6953769 = 2630^2 + 2637^2 .

It is a cyclic number.

It is not a de Polignac number, because 13870669 - 2¹ = 13870667 is a prime.

It is a super-2 number, since 2×13870669² = 384790917015122, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13870663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169114 + ... + 169195.

It is an arithmetic number, because the mean of its divisors is an integer number (3552255).

Almost surely, 2^13870669 is an apocalyptic number.

It is an amenable number.

13870669 is a deficient number, since it is larger than the sum of its proper divisors (338351).

13870669 is an equidigital number, since it uses as much as digits as its factorization.

13870669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338350.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 13870669 is about 3724.3347056891. The cubic root of 13870669 is about 240.2697718809.

It can be divided in two parts, 138 and 70669, that added together give a palindrome (70807).

The spelling of 13870669 in words is "thirteen million, eight hundred seventy thousand, six hundred sixty-nine".