13671506 has 12 divisors (see below), whose sum is σ = 21000942. Its totient is φ = 6674976.

The previous prime is 13671487. The next prime is 13671521. The reversal of 13671506 is 60517631.

It can be written as a sum of positive squares in only one way, i.e., 13359025 + 312481 = 3655^2 + 559^2 .

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1850 + ... + 5546.

Almost surely, 2^13671506 is an apocalyptic number.

It is a pronic number, being equal to 3697×3698.

13671506 is a deficient number, since it is larger than the sum of its proper divisors (7329436).

13671506 is an equidigital number, since it uses as much as digits as its factorization.

13671506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3785 (or 3742 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 13671506 is about 3697.4999661934. The cubic root of 13671506 is about 239.1142465994.

The spelling of 13671506 in words is "thirteen million, six hundred seventy-one thousand, five hundred six".