688778083 has 8 divisors (see below), whose sum is σ = 789004800. Its totient is φ = 589008840.

The previous prime is 688778081. The next prime is 688778087. The reversal of 688778083 is 380877886.

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

It is not a de Polignac number, because 688778083 - 2¹ = 688778081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (688778081) 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, 111133 + ... + 117166.

It is an arithmetic number, because the mean of its divisors is an integer number (98625600).

Almost surely, 2^688778083 is an apocalyptic number.

688778083 is a deficient number, since it is larger than the sum of its proper divisors (100226717).

688778083 is a wasteful number, since it uses less digits than its factorization.

688778083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228737.

The product of its (nonzero) digits is 3612672, while the sum is 55.

The square root of 688778083 is about 26244.5819741904. The cubic root of 688778083 is about 883.1336638371.

The spelling of 688778083 in words is "six hundred eighty-eight million, seven hundred seventy-eight thousand, eighty-three".