13639702 has 4 divisors (see below), whose sum is σ = 20459556. Its totient is φ = 6819850.

The previous prime is 13639697. The next prime is 13639727. The reversal of 13639702 is 20793631.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3409924 + ... + 3409927.

It is an arithmetic number, because the mean of its divisors is an integer number (5114889).

Almost surely, 2^13639702 is an apocalyptic number.

13639702 is a deficient number, since it is larger than the sum of its proper divisors (6819854).

13639702 is an equidigital number, since it uses as much as digits as its factorization.

13639702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6819853.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 13639702 is about 3693.1967182916. The cubic root of 13639702 is about 238.9286856199.

It can be divided in two parts, 13639 and 702, that added together give a palindrome (14341).

The spelling of 13639702 in words is "thirteen million, six hundred thirty-nine thousand, seven hundred two".