13806651 has 4 divisors (see below), whose sum is σ = 18408872. Its totient is φ = 9204432.

The previous prime is 13806643. The next prime is 13806671. The reversal of 13806651 is 15660831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15660831 = 3 ⋅5220277.

It is not a de Polignac number, because 13806651 - 2³ = 13806643 is a prime.

It is a super-2 number, since 2×13806651² = 381247223671602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13806671) 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, 2301106 + ... + 2301111.

It is an arithmetic number, because the mean of its divisors is an integer number (4602218).

Almost surely, 2^13806651 is an apocalyptic number.

13806651 is a deficient number, since it is larger than the sum of its proper divisors (4602221).

13806651 is an equidigital number, since it uses as much as digits as its factorization.

13806651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4602220.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 13806651 is about 3715.7302108738. The cubic root of 13806651 is about 239.8995586651.

The spelling of 13806651 in words is "thirteen million, eight hundred six thousand, six hundred fifty-one".