13656746 has 8 divisors (see below), whose sum is σ = 21690180. Its totient is φ = 6426688.

The previous prime is 13656739. The next prime is 13656749. The reversal of 13656746 is 64765631.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13653025 + 3721 = 3695^2 + 61^2 .

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

It is a super-2 number, since 2×13656746² = 373013422617032, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13656749) 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, 200801 + ... + 200868.

Almost surely, 2^13656746 is an apocalyptic number.

13656746 is a deficient number, since it is larger than the sum of its proper divisors (8033434).

13656746 is a wasteful number, since it uses less digits than its factorization.

13656746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401688.

The product of its digits is 90720, while the sum is 38.

The square root of 13656746 is about 3695.5034839653. The cubic root of 13656746 is about 239.0281649551.

The spelling of 13656746 in words is "thirteen million, six hundred fifty-six thousand, seven hundred forty-six".