13856723 has 2 divisors, whose sum is σ = 13856724. Its totient is φ = 13856722.

The previous prime is 13856671. The next prime is 13856737. The reversal of 13856723 is 32765831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13856723 - 2¹² = 13852627 is a prime.

It is not a weakly prime, because it can be changed into another prime (13856753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6928361 + 6928362.

It is an arithmetic number, because the mean of its divisors is an integer number (6928362).

Almost surely, 2^13856723 is an apocalyptic number.

13856723 is a deficient number, since it is larger than the sum of its proper divisors (1).

13856723 is an equidigital number, since it uses as much as digits as its factorization.

13856723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 35.

The square root of 13856723 is about 3722.4619541373. The cubic root of 13856723 is about 240.1892199896.

The spelling of 13856723 in words is "thirteen million, eight hundred fifty-six thousand, seven hundred twenty-three".