66045718 has 16 divisors (see below), whose sum is σ = 100399824. Its totient is φ = 32581600.

The previous prime is 66045709. The next prime is 66045757. The reversal of 66045718 is 81754066.

It is a super-2 number, since 2×66045718² = 8724073732271048, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 112221 + ... + 112807.

It is an arithmetic number, because the mean of its divisors is an integer number (6274989).

Almost surely, 2^66045718 is an apocalyptic number.

66045718 is a deficient number, since it is larger than the sum of its proper divisors (34354106).

66045718 is a wasteful number, since it uses less digits than its factorization.

66045718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1247.

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

The square root of 66045718 is about 8126.8516659282. The cubic root of 66045718 is about 404.2172923488.

The spelling of 66045718 in words is "sixty-six million, forty-five thousand, seven hundred eighteen".