13659867 has 16 divisors (see below), whose sum is σ = 21794080. Its totient is φ = 8405856.

The previous prime is 13659839. The next prime is 13659869. The reversal of 13659867 is 76895631.

It is a happy number.

It is not a de Polignac number, because 13659867 - 2¹² = 13655771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13659869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19108 + ... + 19809.

It is an arithmetic number, because the mean of its divisors is an integer number (1362130).

Almost surely, 2^13659867 is an apocalyptic number.

13659867 is a deficient number, since it is larger than the sum of its proper divisors (8134213).

13659867 is a wasteful number, since it uses less digits than its factorization.

13659867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38939 (or 38933 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 13659867 is about 3695.9257297733. The cubic root of 13659867 is about 239.0463720762.

The spelling of 13659867 in words is "thirteen million, six hundred fifty-nine thousand, eight hundred sixty-seven".