13634473 has 2 divisors, whose sum is σ = 13634474. Its totient is φ = 13634472.

The previous prime is 13634471. The next prime is 13634477. The reversal of 13634473 is 37443631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12981609 + 652864 = 3603^2 + 808^2 .

It is a cyclic number.

It is not a de Polignac number, because 13634473 - 2¹ = 13634471 is a prime.

Together with 13634471, it forms a pair of twin primes.

It is a zygodrome in base 3.

It is not a weakly prime, because it can be changed into another prime (13634471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6817236 + 6817237.

It is an arithmetic number, because the mean of its divisors is an integer number (6817237).

Almost surely, 2^13634473 is an apocalyptic number.

It is an amenable number.

13634473 is a deficient number, since it is larger than the sum of its proper divisors (1).

13634473 is an equidigital number, since it uses as much as digits as its factorization.

13634473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 31.

The square root of 13634473 is about 3692.4887271324. The cubic root of 13634473 is about 238.8981493275.

The spelling of 13634473 in words is "thirteen million, six hundred thirty-four thousand, four hundred seventy-three".