13673971 has 4 divisors (see below), whose sum is σ = 13806832. Its totient is φ = 13541112.

The previous prime is 13673969. The next prime is 13673981. The reversal of 13673971 is 17937631.

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 13673971 - 2¹ = 13673969 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13673971.

It is not an unprimeable number, because it can be changed into a prime (13673921) 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, 66276 + ... + 66481.

It is an arithmetic number, because the mean of its divisors is an integer number (3451708).

Almost surely, 2^13673971 is an apocalyptic number.

13673971 is a deficient number, since it is larger than the sum of its proper divisors (132861).

13673971 is a wasteful number, since it uses less digits than its factorization.

13673971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132860.

The product of its digits is 23814, while the sum is 37.

The square root of 13673971 is about 3697.8332845059. The cubic root of 13673971 is about 239.1286166622.

The spelling of 13673971 in words is "thirteen million, six hundred seventy-three thousand, nine hundred seventy-one".