13661466 has 64 divisors (see below), whose sum is σ = 34062336. Its totient is φ = 3556800.

The previous prime is 13661449. The next prime is 13661467. The reversal of 13661466 is 66416631.

It is not an unprimeable number, because it can be changed into a prime (13661467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71431 + ... + 71621.

It is an arithmetic number, because the mean of its divisors is an integer number (532224).

Almost surely, 2^13661466 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13661466, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17031168).

13661466 is an abundant number, since it is smaller than the sum of its proper divisors (20400870).

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

13661466 is a wasteful number, since it uses less digits than its factorization.

13661466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347.

The product of its digits is 15552, while the sum is 33.

The square root of 13661466 is about 3696.1420427251. The cubic root of 13661466 is about 239.0556991615.

The spelling of 13661466 in words is "thirteen million, six hundred sixty-one thousand, four hundred sixty-six".