13671573 has 12 divisors (see below), whose sum is σ = 18691104. Its totient is φ = 8888800.

The previous prime is 13671571. The next prime is 13671577. The reversal of 13671573 is 37517631.

It is not a de Polignac number, because 13671573 - 2¹ = 13671571 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13671571) 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 11 ways as a sum of consecutive naturals, for example, 3688 + ... + 6398.

It is an arithmetic number, because the mean of its divisors is an integer number (1557592).

Almost surely, 2^13671573 is an apocalyptic number.

It is an amenable number.

13671573 is a deficient number, since it is larger than the sum of its proper divisors (5019531).

13671573 is an equidigital number, since it uses as much as digits as its factorization.

13671573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2796 (or 2755 counting only the distinct ones).

The product of its digits is 13230, while the sum is 33.

The square root of 13671573 is about 3697.5090263582. The cubic root of 13671573 is about 239.1146372082.

The spelling of 13671573 in words is "thirteen million, six hundred seventy-one thousand, five hundred seventy-three".