13656722 has 8 divisors (see below), whose sum is σ = 20871756. Its totient is φ = 6699472.

The previous prime is 13656697. The next prime is 13656739. The reversal of 13656722 is 22765631.

It can be written as a sum of positive squares in 2 ways, for example, as 12952801 + 703921 = 3599^2 + 839^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64313 + ... + 64524.

Almost surely, 2^13656722 is an apocalyptic number.

13656722 is a deficient number, since it is larger than the sum of its proper divisors (7215034).

13656722 is a wasteful number, since it uses less digits than its factorization.

13656722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128892.

The product of its digits is 15120, while the sum is 32.

The square root of 13656722 is about 3695.5002367744. The cubic root of 13656722 is about 239.0280249345.

The spelling of 13656722 in words is "thirteen million, six hundred fifty-six thousand, seven hundred twenty-two".