671997286 has 4 divisors (see below), whose sum is σ = 1007995932. Its totient is φ = 335998642.

The previous prime is 671997283. The next prime is 671997311. The reversal of 671997286 is 682799176.

671997286 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671997281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167999320 + ... + 167999323.

It is an arithmetic number, because the mean of its divisors is an integer number (251998983).

Almost surely, 2^671997286 is an apocalyptic number.

671997286 is a deficient number, since it is larger than the sum of its proper divisors (335998646).

671997286 is a wasteful number, since it uses less digits than its factorization.

671997286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335998645.

The product of its digits is 2286144, while the sum is 55.

The square root of 671997286 is about 25922.9104461671. The cubic root of 671997286 is about 875.9026488078.

The spelling of 671997286 in words is "six hundred seventy-one million, nine hundred ninety-seven thousand, two hundred eighty-six".