688260660086 has 8 divisors (see below), whose sum is σ = 1032882845400. Its totient is φ = 343966378288.

The previous prime is 688260660041. The next prime is 688260660091. The reversal of 688260660086 is 680066062886.

It is a happy number.

688260660086 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

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, 81970631 + ... + 81979026.

It is an arithmetic number, because the mean of its divisors is an integer number (129110355675).

Almost surely, 2^688260660086 is an apocalyptic number.

688260660086 is a deficient number, since it is larger than the sum of its proper divisors (344622185314).

688260660086 is a wasteful number, since it uses less digits than its factorization.

688260660086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163951758.

The product of its (nonzero) digits is 7962624, while the sum is 56.

The spelling of 688260660086 in words is "six hundred eighty-eight billion, two hundred sixty million, six hundred sixty thousand, eighty-six".