13706523 has 16 divisors (see below), whose sum is σ = 20416000. Its totient is φ = 9088200.

The previous prime is 13706513. The next prime is 13706527. The reversal of 13706523 is 32560731.

It is a happy number.

13706523 is a `hidden beast` number, since 1 + 3 + 7 + 0 + 652 + 3 = 666.

It is not a de Polignac number, because 13706523 - 2⁵ = 13706491 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13706527) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4098 + ... + 6648.

It is an arithmetic number, because the mean of its divisors is an integer number (1276000).

Almost surely, 2^13706523 is an apocalyptic number.

13706523 is a deficient number, since it is larger than the sum of its proper divisors (6709477).

13706523 is a wasteful number, since it uses less digits than its factorization.

13706523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2759 (or 2753 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 13706523 is about 3702.2321645191. The cubic root of 13706523 is about 239.3182213249.

The spelling of 13706523 in words is "thirteen million, seven hundred six thousand, five hundred twenty-three".