688934030 has 16 divisors (see below), whose sum is σ = 1255023504. Its totient is φ = 272253120.

The previous prime is 688934009. The next prime is 688934033. The reversal of 688934030 is 30439886.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688934033) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 414191 + ... + 415850.

It is an arithmetic number, because the mean of its divisors is an integer number (78438969).

Almost surely, 2^688934030 is an apocalyptic number.

688934030 is a deficient number, since it is larger than the sum of its proper divisors (566089474).

688934030 is a wasteful number, since it uses less digits than its factorization.

688934030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830131.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 688934030 is about 26247.5528383124. The cubic root of 688934030 is about 883.2003092276.

The spelling of 688934030 in words is "six hundred eighty-eight million, nine hundred thirty-four thousand, thirty".