13634971 has 4 divisors (see below), whose sum is σ = 15582832. Its totient is φ = 11687112.

The previous prime is 13634941. The next prime is 13634977. The reversal of 13634971 is 17943631.

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

It is a cyclic number.

It is not a de Polignac number, because 13634971 - 2¹³ = 13626779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13634977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 973920 + ... + 973933.

It is an arithmetic number, because the mean of its divisors is an integer number (3895708).

Almost surely, 2^13634971 is an apocalyptic number.

13634971 is a deficient number, since it is larger than the sum of its proper divisors (1947861).

13634971 is an equidigital number, since it uses as much as digits as its factorization.

13634971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1947860.

The product of its digits is 13608, while the sum is 34.

The square root of 13634971 is about 3692.5561607104. The cubic root of 13634971 is about 238.9010578822.

The spelling of 13634971 in words is "thirteen million, six hundred thirty-four thousand, nine hundred seventy-one".