688347912 has 64 divisors (see below), whose sum is σ = 1998979200. Its totient is φ = 193443840.

The previous prime is 688347809. The next prime is 688347929. The reversal of 688347912 is 219743886.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23337 + ... + 43832.

It is an arithmetic number, because the mean of its divisors is an integer number (31234050).

Almost surely, 2^688347912 is an apocalyptic number.

It is an amenable number.

688347912 is an abundant number, since it is smaller than the sum of its proper divisors (1310631288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

688347912 is a wasteful number, since it uses less digits than its factorization.

688347912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67246 (or 67242 counting only the distinct ones).

The product of its digits is 580608, while the sum is 48.

The square root of 688347912 is about 26236.3852693164. The cubic root of 688347912 is about 882.9497741269.

The spelling of 688347912 in words is "six hundred eighty-eight million, three hundred forty-seven thousand, nine hundred twelve".