13722659 has 4 divisors (see below), whose sum is σ = 14057400. Its totient is φ = 13387920.

The previous prime is 13722649. The next prime is 13722661. The reversal of 13722659 is 95622731.

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

It is a cyclic number.

It is not a de Polignac number, because 13722659 - 2⁸ = 13722403 is a prime.

It is a super-2 number, since 2×13722659² = 376622740060562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13722629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167309 + ... + 167390.

It is an arithmetic number, because the mean of its divisors is an integer number (3514350).

Almost surely, 2^13722659 is an apocalyptic number.

13722659 is a deficient number, since it is larger than the sum of its proper divisors (334741).

13722659 is an equidigital number, since it uses as much as digits as its factorization.

13722659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334740.

The product of its digits is 22680, while the sum is 35.

The square root of 13722659 is about 3704.4107493635. The cubic root of 13722659 is about 239.4120969305.

The spelling of 13722659 in words is "thirteen million, seven hundred twenty-two thousand, six hundred fifty-nine".