13570969 has 4 divisors (see below), whose sum is σ = 13590820. Its totient is φ = 13551120.

The previous prime is 13570939. The next prime is 13571009. The reversal of 13570969 is 96907531.

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 4359744 + 9211225 = 2088^2 + 3035^2 .

It is a cyclic number.

It is not a de Polignac number, because 13570969 - 2⁵ = 13570937 is a prime.

It is a super-2 number, since 2×13570969² = 368342399197922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13570939) 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, 8862 + ... + 10279.

It is an arithmetic number, because the mean of its divisors is an integer number (3397705).

Almost surely, 2^13570969 is an apocalyptic number.

It is an amenable number.

13570969 is a deficient number, since it is larger than the sum of its proper divisors (19851).

13570969 is an equidigital number, since it uses as much as digits as its factorization.

13570969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19850.

The product of its (nonzero) digits is 51030, while the sum is 40.

The square root of 13570969 is about 3683.8796125824. The cubic root of 13570969 is about 238.5266742021.

The spelling of 13570969 in words is "thirteen million, five hundred seventy thousand, nine hundred sixty-nine".