716856818 has 4 divisors (see below), whose sum is σ = 1075285230. Its totient is φ = 358428408.

The previous prime is 716856797. The next prime is 716856821. The reversal of 716856818 is 818658617.

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

It can be written as a sum of positive squares in only one way, i.e., 640241809 + 76615009 = 25303^2 + 8753^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 179214203 + ... + 179214206.

Almost surely, 2^716856818 is an apocalyptic number.

716856818 is a deficient number, since it is larger than the sum of its proper divisors (358428412).

716856818 is a wasteful number, since it uses less digits than its factorization.

716856818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358428411.

The product of its digits is 645120, while the sum is 50.

The square root of 716856818 is about 26774.1819296127. The cubic root of 716856818 is about 894.9747994943.

The spelling of 716856818 in words is "seven hundred sixteen million, eight hundred fifty-six thousand, eight hundred eighteen".