688020802 has 8 divisors (see below), whose sum is σ = 1179464256. Its totient is φ = 294866052.

The previous prime is 688020797. The next prime is 688020829. The reversal of 688020802 is 208020886.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24572158 + ... + 24572185.

It is an arithmetic number, because the mean of its divisors is an integer number (147433032).

Almost surely, 2^688020802 is an apocalyptic number.

688020802 is a deficient number, since it is larger than the sum of its proper divisors (491443454).

688020802 is a wasteful number, since it uses less digits than its factorization.

688020802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49144352.

The product of its (nonzero) digits is 12288, while the sum is 34.

The square root of 688020802 is about 26230.1506286182. The cubic root of 688020802 is about 882.8098896983.

The spelling of 688020802 in words is "six hundred eighty-eight million, twenty thousand, eight hundred two".