13091706 has 40 divisors (see below), whose sum is σ = 29551104. Its totient is φ = 4331880.

The previous prime is 13091699. The next prime is 13091723. The reversal of 13091706 is 60719031.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13091706.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 33991 + ... + 34373.

Almost surely, 2^13091706 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13091706, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14775552).

13091706 is an abundant number, since it is smaller than the sum of its proper divisors (16459398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13091706 is a wasteful number, since it uses less digits than its factorization.

13091706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608 (or 599 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 13091706 is about 3618.2462602758. The cubic root of 13091706 is about 235.6850750107.

The spelling of 13091706 in words is "thirteen million, ninety-one thousand, seven hundred six".