13645723 has 8 divisors (see below), whose sum is σ = 16794848. Its totient is φ = 10796544.

The previous prime is 13645699. The next prime is 13645727. The reversal of 13645723 is 32754631.

13645723 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 13645723 - 2⁵ = 13645691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13645727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74886 + ... + 75067.

It is an arithmetic number, because the mean of its divisors is an integer number (2099356).

Almost surely, 2^13645723 is an apocalyptic number.

13645723 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13645723 is a deficient number, since it is larger than the sum of its proper divisors (3149125).

13645723 is a wasteful number, since it uses less digits than its factorization.

13645723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149973.

The product of its digits is 15120, while the sum is 31.

The square root of 13645723 is about 3694.0117758340. The cubic root of 13645723 is about 238.9638373651.

The spelling of 13645723 in words is "thirteen million, six hundred forty-five thousand, seven hundred twenty-three".