16661466 has 12 divisors (see below), whose sum is σ = 36099882. Its totient is φ = 5553816.

The previous prime is 16661443. The next prime is 16661467. The reversal of 16661466 is 66416661.

It can be written as a sum of positive squares in only one way, i.e., 9126441 + 7535025 = 3021^2 + 2745^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16661466.

It is not an unprimeable number, because it can be changed into a prime (16661467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 462801 + ... + 462836.

Almost surely, 2^16661466 is an apocalyptic number.

16661466 is an abundant number, since it is smaller than the sum of its proper divisors (19438416).

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

16661466 is a wasteful number, since it uses less digits than its factorization.

16661466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925645 (or 925642 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 16661466 is about 4081.8459059597. The cubic root of 16661466 is about 255.4099059011.

The spelling of 16661466 in words is "sixteen million, six hundred sixty-one thousand, four hundred sixty-six".