13287673 has 6 divisors (see below), whose sum is σ = 15457146. Its totient is φ = 11389392.

The previous prime is 13287643. The next prime is 13287697. The reversal of 13287673 is 37678231.

13287673 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 12446784 + 840889 = 3528^2 + 917^2 .

It is not a de Polignac number, because 13287673 - 2⁹ = 13287161 is a prime.

It is a Duffinian number.

13287673 is strictly pandigital in base 8.

It is not an unprimeable number, because it can be changed into a prime (13287643) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 135540 + ... + 135637.

It is an arithmetic number, because the mean of its divisors is an integer number (2576191).

Almost surely, 2^13287673 is an apocalyptic number.

It is an amenable number.

13287673 is a deficient number, since it is larger than the sum of its proper divisors (2169473).

13287673 is an equidigital number, since it uses as much as digits as its factorization.

13287673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271191 (or 271184 counting only the distinct ones).

The product of its digits is 42336, while the sum is 37.

The square root of 13287673 is about 3645.2260560903. The cubic root of 13287673 is about 236.8552291684.

The spelling of 13287673 in words is "thirteen million, two hundred eighty-seven thousand, six hundred seventy-three".