688511034830 has 8 divisors (see below), whose sum is σ = 1239319862712. Its totient is φ = 275404413928.

The previous prime is 688511034781. The next prime is 688511034881. The reversal of 688511034830 is 38430115886.

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 pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34425551732 + ... + 34425551751.

It is an arithmetic number, because the mean of its divisors is an integer number (154914982839).

Almost surely, 2^688511034830 is an apocalyptic number.

688511034830 is a deficient number, since it is larger than the sum of its proper divisors (550808827882).

688511034830 is a wasteful number, since it uses less digits than its factorization.

688511034830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68851103490.

The product of its (nonzero) digits is 552960, while the sum is 47.

The spelling of 688511034830 in words is "six hundred eighty-eight billion, five hundred eleven million, thirty-four thousand, eight hundred thirty".