13611071 has 4 divisors (see below), whose sum is σ = 13618632. Its totient is φ = 13603512.

The previous prime is 13611061. The next prime is 13611083. The reversal of 13611071 is 17011631.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13611071 - 2⁶ = 13611007 is a prime.

It is a super-2 number, since 2×13611071² = 370522507534082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13611041) 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, 656 + ... + 5258.

It is an arithmetic number, because the mean of its divisors is an integer number (3404658).

Almost surely, 2^13611071 is an apocalyptic number.

13611071 is a deficient number, since it is larger than the sum of its proper divisors (7561).

13611071 is an equidigital number, since it uses as much as digits as its factorization.

13611071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7560.

The product of its (nonzero) digits is 126, while the sum is 20.

The square root of 13611071 is about 3689.3185007532. The cubic root of 13611071 is about 238.7613906830.

The spelling of 13611071 in words is "thirteen million, six hundred eleven thousand, seventy-one".