66316994 has 8 divisors (see below), whose sum is σ = 100031760. Its totient is φ = 32973076.

The previous prime is 66316963. The next prime is 66317021. The reversal of 66316994 is 49961366.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92264 + ... + 92979.

It is an arithmetic number, because the mean of its divisors is an integer number (12503970).

Almost surely, 2^66316994 is an apocalyptic number.

66316994 is a deficient number, since it is larger than the sum of its proper divisors (33714766).

66316994 is a wasteful number, since it uses less digits than its factorization.

66316994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185424.

The product of its digits is 209952, while the sum is 44.

The square root of 66316994 is about 8143.5246668749. The cubic root of 66316994 is about 404.7699633556.

The spelling of 66316994 in words is "sixty-six million, three hundred sixteen thousand, nine hundred ninety-four".