688826804 has 12 divisors (see below), whose sum is σ = 1233480864. Its totient is φ = 336403704.

The previous prime is 688826797. The next prime is 688826837. The reversal of 688826804 is 408628886.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2002232 + ... + 2002575.

It is an arithmetic number, because the mean of its divisors is an integer number (102790072).

Almost surely, 2^688826804 is an apocalyptic number.

It is an amenable number.

688826804 is a deficient number, since it is larger than the sum of its proper divisors (544654060).

688826804 is a wasteful number, since it uses less digits than its factorization.

688826804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4004854 (or 4004852 counting only the distinct ones).

The product of its (nonzero) digits is 1179648, while the sum is 50.

The square root of 688826804 is about 26245.5101684079. The cubic root of 688826804 is about 883.1544862867.

The spelling of 688826804 in words is "six hundred eighty-eight million, eight hundred twenty-six thousand, eight hundred four".