13947066 has 80 divisors (see below), whose sum is σ = 36590400. Its totient is φ = 3969000.

The previous prime is 13947061. The next prime is 13947067. The reversal of 13947066 is 66074931.

13947066 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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 13947066.

It is not an unprimeable number, because it can be changed into a prime (13947061) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 55441 + ... + 55691.

It is an arithmetic number, because the mean of its divisors is an integer number (457380).

Almost surely, 2^13947066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13947066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18295200).

13947066 is an abundant number, since it is smaller than the sum of its proper divisors (22643334).

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

13947066 is an equidigital number, since it uses as much as digits as its factorization.

13947066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286 (or 263 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 13947066 is about 3734.5770844903. The cubic root of 13947066 is about 240.7100845113.

The spelling of 13947066 in words is "thirteen million, nine hundred forty-seven thousand, sixty-six".