13491066 has 8 divisors (see below), whose sum is σ = 26982144. Its totient is φ = 4497020.

The previous prime is 13491029. The next prime is 13491073. The reversal of 13491066 is 66019431.

It is a sphenic number, since it is the product of 3 distinct primes.

13491066 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1124250 + ... + 1124261.

It is an arithmetic number, because the mean of its divisors is an integer number (3372768).

Almost surely, 2^13491066 is an apocalyptic number.

13491066 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

13491066 is a wasteful number, since it uses less digits than its factorization.

13491066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2248516.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 13491066 is about 3673.0186495579. The cubic root of 13491066 is about 238.0576208672.

It can be divided in two parts, 1349 and 1066, that added together give a triangular number (2415 = T₆₉).

The spelling of 13491066 in words is "thirteen million, four hundred ninety-one thousand, sixty-six".