817662068 has 12 divisors (see below), whose sum is σ = 1442176512. Its totient is φ = 405611640.

The previous prime is 817662067. The next prime is 817662091. The reversal of 817662068 is 860266718.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (817662067) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 804278 + ... + 805293.

It is an arithmetic number, because the mean of its divisors is an integer number (120181376).

Almost surely, 2^817662068 is an apocalyptic number.

It is an amenable number.

817662068 is a deficient number, since it is larger than the sum of its proper divisors (624514444).

817662068 is a wasteful number, since it uses less digits than its factorization.

817662068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1609702 (or 1609700 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 817662068 is about 28594.7909242225. The cubic root of 817662068 is about 935.0997703024.

The spelling of 817662068 in words is "eight hundred seventeen million, six hundred sixty-two thousand, sixty-eight".