16661934 has 12 divisors (see below), whose sum is σ = 36100896. Its totient is φ = 5553972.

The previous prime is 16661927. The next prime is 16661971. The reversal of 16661934 is 43916661.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 462814 + ... + 462849.

It is an arithmetic number, because the mean of its divisors is an integer number (3008408).

Almost surely, 2^16661934 is an apocalyptic number.

16661934 is an abundant number, since it is smaller than the sum of its proper divisors (19438962).

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

16661934 is a wasteful number, since it uses less digits than its factorization.

16661934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925671 (or 925668 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 16661934 is about 4081.9032325620. The cubic root of 16661934 is about 255.4122972616.

It can be divided in two parts, 1666 and 1934, that added together give a square (3600 = 60²).

The spelling of 16661934 in words is "sixteen million, six hundred sixty-one thousand, nine hundred thirty-four".