317216666 has 32 divisors (see below), whose sum is σ = 541007040. Its totient is φ = 138288384.

The previous prime is 317216657. The next prime is 317216693. The reversal of 317216666 is 666612713.

It is a happy number.

317216666 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213161 + ... + 214643.

It is an arithmetic number, because the mean of its divisors is an integer number (16906470).

Almost surely, 2^317216666 is an apocalyptic number.

317216666 is a deficient number, since it is larger than the sum of its proper divisors (223790374).

317216666 is a wasteful number, since it uses less digits than its factorization.

317216666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1950.

The product of its digits is 54432, while the sum is 38.

The square root of 317216666 is about 17810.5773629043. The cubic root of 317216666 is about 682.0015035384.

The spelling of 317216666 in words is "three hundred seventeen million, two hundred sixteen thousand, six hundred sixty-six".