13970345 has 8 divisors (see below), whose sum is σ = 17750664. Its totient is φ = 10518784.

The previous prime is 13970309. The next prime is 13970347. The reversal of 13970345 is 54307931.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 698896 + 13271449 = 836^2 + 3643^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-13970345 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13970347) 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, 82094 + ... + 82263.

It is an arithmetic number, because the mean of its divisors is an integer number (2218833).

Almost surely, 2^13970345 is an apocalyptic number.

It is an amenable number.

13970345 is a deficient number, since it is larger than the sum of its proper divisors (3780319).

13970345 is a wasteful number, since it uses less digits than its factorization.

13970345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164379.

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 13970345 is about 3737.6924699606. The cubic root of 13970345 is about 240.8439328623.

The spelling of 13970345 in words is "thirteen million, nine hundred seventy thousand, three hundred forty-five".