13706503 has 4 divisors (see below), whose sum is σ = 13728528. Its totient is φ = 13684480.

The previous prime is 13706491. The next prime is 13706513. The reversal of 13706503 is 30560731.

It is a happy number.

13706503 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30560731 = 89 ⋅343379.

It is a cyclic number.

It is not a de Polignac number, because 13706503 - 2¹⁷ = 13575431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13706513) 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, 10051 + ... + 11332.

It is an arithmetic number, because the mean of its divisors is an integer number (3432132).

Almost surely, 2^13706503 is an apocalyptic number.

13706503 is a deficient number, since it is larger than the sum of its proper divisors (22025).

13706503 is an equidigital number, since it uses as much as digits as its factorization.

13706503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22024.

The product of its (nonzero) digits is 1890, while the sum is 25.

The square root of 13706503 is about 3702.2294634450. The cubic root of 13706503 is about 239.3181049237.

The spelling of 13706503 in words is "thirteen million, seven hundred six thousand, five hundred three".