18705466 has 8 divisors (see below), whose sum is σ = 30216564. Its totient is φ = 8633280.

The previous prime is 18705439. The next prime is 18705469. The reversal of 18705466 is 66450781.

It can be written as a sum of positive squares in 2 ways, for example, as 15832441 + 2873025 = 3979^2 + 1695^2 .

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

It is not an unprimeable number, because it can be changed into a prime (18705469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 359695 + ... + 359746.

Almost surely, 2^18705466 is an apocalyptic number.

18705466 is a deficient number, since it is larger than the sum of its proper divisors (11511098).

18705466 is a wasteful number, since it uses less digits than its factorization.

18705466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719456.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 18705466 is about 4324.9816184580. The cubic root of 18705466 is about 265.4541447235.

The spelling of 18705466 in words is "eighteen million, seven hundred five thousand, four hundred sixty-six".