13656347 has 4 divisors (see below), whose sum is σ = 13664616. Its totient is φ = 13648080.

The previous prime is 13656343. The next prime is 13656359. The reversal of 13656347 is 74365631.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 74365631 = 991 ⋅75041.

It is a cyclic number.

It is not a de Polignac number, because 13656347 - 2² = 13656343 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13656341) 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, 713 + ... + 5274.

It is an arithmetic number, because the mean of its divisors is an integer number (3416154).

Almost surely, 2^13656347 is an apocalyptic number.

13656347 is a deficient number, since it is larger than the sum of its proper divisors (8269).

13656347 is an equidigital number, since it uses as much as digits as its factorization.

13656347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8268.

The product of its digits is 45360, while the sum is 35.

The square root of 13656347 is about 3695.4494990461. The cubic root of 13656347 is about 239.0258370905.

The spelling of 13656347 in words is "thirteen million, six hundred fifty-six thousand, three hundred forty-seven".