13671646 has 12 divisors (see below), whose sum is σ = 20764512. Its totient is φ = 6751184.

The previous prime is 13671613. The next prime is 13671649. The reversal of 13671646 is 64617631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13671649) 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 5 ways as a sum of consecutive naturals, for example, 15411 + ... + 16273.

It is an arithmetic number, because the mean of its divisors is an integer number (1730376).

Almost surely, 2^13671646 is an apocalyptic number.

13671646 is a deficient number, since it is larger than the sum of its proper divisors (7092866).

13671646 is an frugal number, since it uses more digits than its factorization.

13671646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043 (or 954 counting only the distinct ones).

The product of its digits is 18144, while the sum is 34.

The square root of 13671646 is about 3697.5188978557. The cubic root of 13671646 is about 239.1150627953.

The spelling of 13671646 in words is "thirteen million, six hundred seventy-one thousand, six hundred forty-six".