66067018 has 8 divisors (see below), whose sum is σ = 99150948. Its totient is φ = 33016704.

The previous prime is 66067003. The next prime is 66067019. The reversal of 66067018 is 81076066.

It can be written as a sum of positive squares in 2 ways, for example, as 61669609 + 4397409 = 7853^2 + 2097^2 .

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 (66067019) 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, 2721 + ... + 11812.

Almost surely, 2^66067018 is an apocalyptic number.

66067018 is a deficient number, since it is larger than the sum of its proper divisors (33083930).

66067018 is a wasteful number, since it uses less digits than its factorization.

66067018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16808.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 66067018 is about 8128.1620308653. The cubic root of 66067018 is about 404.2607415593.

The spelling of 66067018 in words is "sixty-six million, sixty-seven thousand, eighteen".