671717166 has 32 divisors (see below), whose sum is σ = 1381652640. Its totient is φ = 217552896.

The previous prime is 671717153. The next prime is 671717173. The reversal of 671717166 is 661717176.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 204610 + ... + 207866.

It is an arithmetic number, because the mean of its divisors is an integer number (43176645).

Almost surely, 2^671717166 is an apocalyptic number.

671717166 is an abundant number, since it is smaller than the sum of its proper divisors (709935474).

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

671717166 is a wasteful number, since it uses less digits than its factorization.

671717166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4228.

The product of its digits is 74088, while the sum is 42.

The square root of 671717166 is about 25917.5069402904. The cubic root of 671717166 is about 875.7809261188.

The spelling of 671717166 in words is "six hundred seventy-one million, seven hundred seventeen thousand, one hundred sixty-six".