13806207 has 10 divisors (see below), whose sum is σ = 20624208. Its totient is φ = 9204084.

The previous prime is 13806131. The next prime is 13806211. The reversal of 13806207 is 70260831.

13806207 is a `hidden beast` number, since 1 + 38 + 0 + 620 + 7 = 666.

It is not a de Polignac number, because 13806207 - 2¹⁵ = 13773439 is a prime.

It is a super-2 number, since 2×13806207² = 381222703453698, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13806257) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 85143 + ... + 85304.

Almost surely, 2^13806207 is an apocalyptic number.

13806207 is a deficient number, since it is larger than the sum of its proper divisors (6818001).

13806207 is an equidigital number, since it uses as much as digits as its factorization.

13806207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170459 (or 170450 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 13806207 is about 3715.6704643980. The cubic root of 13806207 is about 239.8969870410.

The spelling of 13806207 in words is "thirteen million, eight hundred six thousand, two hundred seven".