688343862 has 16 divisors (see below), whose sum is σ = 1436544000. Its totient is φ = 219471912.

The previous prime is 688343861. The next prime is 688343867. The reversal of 688343862 is 268343886.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688343861) 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, 2493862 + ... + 2494137.

It is an arithmetic number, because the mean of its divisors is an integer number (89784000).

Almost surely, 2^688343862 is an apocalyptic number.

688343862 is an abundant number, since it is smaller than the sum of its proper divisors (748200138).

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

688343862 is a wasteful number, since it uses less digits than its factorization.

688343862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4988027.

The product of its digits is 1327104, while the sum is 48.

The square root of 688343862 is about 26236.3080863143. The cubic root of 688343862 is about 882.9480424669.

The spelling of 688343862 in words is "six hundred eighty-eight million, three hundred forty-three thousand, eight hundred sixty-two".