687276822 has 16 divisors (see below), whose sum is σ = 1375236720. Its totient is φ = 228978432.

The previous prime is 687276787. The next prime is 687276827. The reversal of 687276822 is 228672786.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687276827) 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, 14883 + ... + 39950.

It is an arithmetic number, because the mean of its divisors is an integer number (85952295).

Almost surely, 2^687276822 is an apocalyptic number.

687276822 is an abundant number, since it is smaller than the sum of its proper divisors (687959898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

687276822 is a wasteful number, since it uses less digits than its factorization.

687276822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56927.

The product of its digits is 903168, while the sum is 48.

The square root of 687276822 is about 26215.9650213377. The cubic root of 687276822 is about 882.4915709403.

The spelling of 687276822 in words is "six hundred eighty-seven million, two hundred seventy-six thousand, eight hundred twenty-two".