688820822 has 16 divisors (see below), whose sum is σ = 1042685952. Its totient is φ = 341265960.

The previous prime is 688820791. The next prime is 688820833. The reversal of 688820822 is 228028886.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 311573 + ... + 313775.

It is an arithmetic number, because the mean of its divisors is an integer number (65167872).

Almost surely, 2^688820822 is an apocalyptic number.

688820822 is a deficient number, since it is larger than the sum of its proper divisors (353865130).

688820822 is a wasteful number, since it uses less digits than its factorization.

688820822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3563.

The product of its (nonzero) digits is 196608, while the sum is 44.

The square root of 688820822 is about 26245.3962058110. The cubic root of 688820822 is about 883.1519297440.

The spelling of 688820822 in words is "six hundred eighty-eight million, eight hundred twenty thousand, eight hundred twenty-two".