821314718 has 16 divisors (see below), whose sum is σ = 1418719104. Its totient is φ = 349304280.

The previous prime is 821314717. The next prime is 821314787. The reversal of 821314718 is 817413128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (821314717) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222080 + ... + 225747.

It is an arithmetic number, because the mean of its divisors is an integer number (88669944).

Almost surely, 2^821314718 is an apocalyptic number.

821314718 is a deficient number, since it is larger than the sum of its proper divisors (597404386).

821314718 is a wasteful number, since it uses less digits than its factorization.

821314718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447967.

The product of its digits is 10752, while the sum is 35.

The square root of 821314718 is about 28658.5889045501. The cubic root of 821314718 is about 936.4901241188.

The spelling of 821314718 in words is "eight hundred twenty-one million, three hundred fourteen thousand, seven hundred eighteen".