18066757 has 8 divisors (see below), whose sum is σ = 18289280. Its totient is φ = 17845920.

The previous prime is 18066749. The next prime is 18066809. The reversal of 18066757 is 75766081.

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

It is a cyclic number.

It is not a de Polignac number, because 18066757 - 2³ = 18066749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18066157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43969 + ... + 44377.

It is an arithmetic number, because the mean of its divisors is an integer number (2286160).

Almost surely, 2^18066757 is an apocalyptic number.

It is an amenable number.

18066757 is a deficient number, since it is larger than the sum of its proper divisors (222523).

18066757 is a wasteful number, since it uses less digits than its factorization.

18066757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843.

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 18066757 is about 4250.5007940242. The cubic root of 18066757 is about 262.3977264468.

The spelling of 18066757 in words is "eighteen million, sixty-six thousand, seven hundred fifty-seven".