66487066 has 8 divisors (see below), whose sum is σ = 104066784. Its totient is φ = 31798140.

The previous prime is 66487063. The next prime is 66487079. The reversal of 66487066 is 66078466.

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 (66487063) 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, 722640 + ... + 722731.

It is an arithmetic number, because the mean of its divisors is an integer number (13008348).

Almost surely, 2^66487066 is an apocalyptic number.

66487066 is a deficient number, since it is larger than the sum of its proper divisors (37579718).

66487066 is a wasteful number, since it uses less digits than its factorization.

66487066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1445396.

The product of its (nonzero) digits is 290304, while the sum is 43.

The square root of 66487066 is about 8153.9601421641. The cubic root of 66487066 is about 405.1156830537.

The spelling of 66487066 in words is "sixty-six million, four hundred eighty-seven thousand, sixty-six".