18568066 has 16 divisors (see below), whose sum is σ = 30558528. Its totient is φ = 8391600.

The previous prime is 18568049. The next prime is 18568103. The reversal of 18568066 is 66086581.

18568066 = 226² + 227² + ... + 406².

It is a happy number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1651 + ... + 6313.

It is an arithmetic number, because the mean of its divisors is an integer number (1909908).

Almost surely, 2^18568066 is an apocalyptic number.

18568066 is a deficient number, since it is larger than the sum of its proper divisors (11990462).

18568066 is a wasteful number, since it uses less digits than its factorization.

18568066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4857.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 18568066 is about 4309.0678806443. The cubic root of 18568066 is about 264.8025870419.

The spelling of 18568066 in words is "eighteen million, five hundred sixty-eight thousand, sixty-six".