816868718 has 8 divisors (see below), whose sum is σ = 1225824840. Its totient is φ = 408260440.

The previous prime is 816868711. The next prime is 816868727. The reversal of 816868718 is 817868618.

It is a happy number.

816868718 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 816868718.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816868711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81008 + ... + 90531.

It is an arithmetic number, because the mean of its divisors is an integer number (153228105).

Almost surely, 2^816868718 is an apocalyptic number.

816868718 is a deficient number, since it is larger than the sum of its proper divisors (408956122).

816868718 is a wasteful number, since it uses less digits than its factorization.

816868718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173922.

The product of its digits is 1032192, while the sum is 53.

The square root of 816868718 is about 28580.9152757570. The cubic root of 816868718 is about 934.7972404857.

The spelling of 816868718 in words is "eight hundred sixteen million, eight hundred sixty-eight thousand, seven hundred eighteen".