13638207 has 16 divisors (see below), whose sum is σ = 20522880. Its totient is φ = 7980000.

The previous prime is 13638203. The next prime is 13638211. The reversal of 13638207 is 70283631.

13638207 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13638203) and next prime (13638211).

It is not a de Polignac number, because 13638207 - 2² = 13638203 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13638203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6169 + ... + 8082.

It is an arithmetic number, because the mean of its divisors is an integer number (1282680).

Almost surely, 2^13638207 is an apocalyptic number.

13638207 is a deficient number, since it is larger than the sum of its proper divisors (6884673).

13638207 is a wasteful number, since it uses less digits than its factorization.

13638207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14294.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 13638207 is about 3692.9943135618. The cubic root of 13638207 is about 238.9199559220.

The spelling of 13638207 in words is "thirteen million, six hundred thirty-eight thousand, two hundred seven".