13285197 has 18 divisors (see below), whose sum is σ = 19526442. Its totient is φ = 8703936.

The previous prime is 13285187. The next prime is 13285213. The reversal of 13285197 is 79158231.

13285197 is a `hidden beast` number, since 132 + 8 + 519 + 7 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 1028196 + 12257001 = 1014^2 + 3501^2 .

It is not a de Polignac number, because 13285197 - 2¹⁴ = 13268813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13285117) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 47823 + ... + 48099.

Almost surely, 2^13285197 is an apocalyptic number.

It is an amenable number.

13285197 is a deficient number, since it is larger than the sum of its proper divisors (6241245).

13285197 is an equidigital number, since it uses as much as digits as its factorization.

13285197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429 (or 353 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 13285197 is about 3644.8864179834. The cubic root of 13285197 is about 236.8405165352.

The spelling of 13285197 in words is "thirteen million, two hundred eighty-five thousand, one hundred ninety-seven".