13659722 has 8 divisors (see below), whose sum is σ = 20639556. Its totient is φ = 6779872.

The previous prime is 13659713. The next prime is 13659731. The reversal of 13659722 is 22795631.

It is an interprime number because it is at equal distance from previous prime (13659713) and next prime (13659731).

It can be written as a sum of positive squares in 2 ways, for example, as 13388281 + 271441 = 3659^2 + 521^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24653 + ... + 25200.

Almost surely, 2^13659722 is an apocalyptic number.

13659722 is a deficient number, since it is larger than the sum of its proper divisors (6979834).

13659722 is a wasteful number, since it uses less digits than its factorization.

13659722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49992.

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

The square root of 13659722 is about 3695.9061135262. The cubic root of 13659722 is about 239.0455262444.

The spelling of 13659722 in words is "thirteen million, six hundred fifty-nine thousand, seven hundred twenty-two".