13706243 has 4 divisors (see below), whose sum is σ = 14076720. Its totient is φ = 13335768.

The previous prime is 13706227. The next prime is 13706269. The reversal of 13706243 is 34260731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34260731 = 23 ⋅1489597.

It is a cyclic number.

It is not a de Polignac number, because 13706243 - 2⁴ = 13706227 is a prime.

It is a super-2 number, since 2×13706243² = 375722194350098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13706213) 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, 185183 + ... + 185256.

It is an arithmetic number, because the mean of its divisors is an integer number (3519180).

Almost surely, 2^13706243 is an apocalyptic number.

13706243 is a deficient number, since it is larger than the sum of its proper divisors (370477).

13706243 is an equidigital number, since it uses as much as digits as its factorization.

13706243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370476.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 13706243 is about 3702.1943493015. The cubic root of 13706243 is about 239.3165916980.

Adding to 13706243 its reverse (34260731), we get a palindrome (47966974).

The spelling of 13706243 in words is "thirteen million, seven hundred six thousand, two hundred forty-three".