13970617 has 4 divisors (see below), whose sum is σ = 14792436. Its totient is φ = 13148800.

The previous prime is 13970581. The next prime is 13970633. The reversal of 13970617 is 71607931.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12278016 + 1692601 = 3504^2 + 1301^2 .

It is a cyclic number.

It is not a de Polignac number, because 13970617 - 2²³ = 5582009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13970917) 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 3 ways as a sum of consecutive naturals, for example, 410884 + ... + 410917.

It is an arithmetic number, because the mean of its divisors is an integer number (3698109).

Almost surely, 2^13970617 is an apocalyptic number.

13970617 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

13970617 is a deficient number, since it is larger than the sum of its proper divisors (821819).

13970617 is an equidigital number, since it uses as much as digits as its factorization.

13970617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821818.

The product of its (nonzero) digits is 7938, while the sum is 34.

The square root of 13970617 is about 3737.7288558696. The cubic root of 13970617 is about 240.8454959142.

It can be divided in two parts, 139 and 70617, that added together give a square (70756 = 266²).

The spelling of 13970617 in words is "thirteen million, nine hundred seventy thousand, six hundred seventeen".