66567066 has 8 divisors (see below), whose sum is σ = 133134144. Its totient is φ = 22189020.

The previous prime is 66567049. The next prime is 66567071. The reversal of 66567066 is 66076566.

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

66567066 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5547250 + ... + 5547261.

It is an arithmetic number, because the mean of its divisors is an integer number (16641768).

Almost surely, 2^66567066 is an apocalyptic number.

66567066 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66567066 is a wasteful number, since it uses less digits than its factorization.

66567066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11094516.

The product of its (nonzero) digits is 272160, while the sum is 42.

The square root of 66567066 is about 8158.8642591969. The cubic root of 66567066 is about 405.2781019348.

The spelling of 66567066 in words is "sixty-six million, five hundred sixty-seven thousand, sixty-six".