13642886 has 4 divisors (see below), whose sum is σ = 20464332. Its totient is φ = 6821442.

The previous prime is 13642879. The next prime is 13642901. The reversal of 13642886 is 68824631.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×13642886² = 372256676817992, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3410720 + ... + 3410723.

It is an arithmetic number, because the mean of its divisors is an integer number (5116083).

Almost surely, 2^13642886 is an apocalyptic number.

13642886 is a deficient number, since it is larger than the sum of its proper divisors (6821446).

13642886 is an equidigital number, since it uses as much as digits as its factorization.

13642886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6821445.

The product of its digits is 55296, while the sum is 38.

The square root of 13642886 is about 3693.6277560144. The cubic root of 13642886 is about 238.9472757071.

The spelling of 13642886 in words is "thirteen million, six hundred forty-two thousand, eight hundred eighty-six".