18066970 has 8 divisors (see below), whose sum is σ = 32520564. Its totient is φ = 7226784.

The previous prime is 18066953. The next prime is 18066977. The reversal of 18066970 is 7966081.

It can be written as a sum of positive squares in 2 ways, for example, as 16410601 + 1656369 = 4051^2 + 1287^2 .

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 (18066977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 903339 + ... + 903358.

Almost surely, 2^18066970 is an apocalyptic number.

18066970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18066970 is a deficient number, since it is larger than the sum of its proper divisors (14453594).

18066970 is a wasteful number, since it uses less digits than its factorization.

18066970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1806704.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 18066970 is about 4250.5258498214. The cubic root of 18066970 is about 262.3987576316.

The spelling of 18066970 in words is "eighteen million, sixty-six thousand, nine hundred seventy".