13611667 has 4 divisors (see below), whose sum is σ = 13633480. Its totient is φ = 13589856.

The previous prime is 13611659. The next prime is 13611673. The reversal of 13611667 is 76611631.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13611667 - 2³ = 13611659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13612667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9942 + ... + 11227.

It is an arithmetic number, because the mean of its divisors is an integer number (3408370).

Almost surely, 2^13611667 is an apocalyptic number.

13611667 is a deficient number, since it is larger than the sum of its proper divisors (21813).

13611667 is an equidigital number, since it uses as much as digits as its factorization.

13611667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21812.

The product of its digits is 4536, while the sum is 31.

The square root of 13611667 is about 3689.3992735946. The cubic root of 13611667 is about 238.7648755842.

The spelling of 13611667 in words is "thirteen million, six hundred eleven thousand, six hundred sixty-seven".