66484666 has 4 divisors (see below), whose sum is σ = 99727002. Its totient is φ = 33242332.

The previous prime is 66484601. The next prime is 66484669. The reversal of 66484666 is 66648466.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 66341025 + 143641 = 8145^2 + 379^2 .

It is not an unprimeable number, because it can be changed into a prime (66484669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16621165 + ... + 16621168.

Almost surely, 2^66484666 is an apocalyptic number.

66484666 is a deficient number, since it is larger than the sum of its proper divisors (33242336).

66484666 is a wasteful number, since it uses less digits than its factorization.

66484666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33242335.

The product of its digits is 995328, while the sum is 46.

The square root of 66484666 is about 8153.8129730820. The cubic root of 66484666 is about 405.1108084748.

The spelling of 66484666 in words is "sixty-six million, four hundred eighty-four thousand, six hundred sixty-six".