688486422 has 32 divisors (see below), whose sum is σ = 1501678080. Its totient is φ = 209158560.

The previous prime is 688486387. The next prime is 688486423. The reversal of 688486422 is 224684886.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688486423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49704 + ... + 62027.

It is an arithmetic number, because the mean of its divisors is an integer number (46927440).

Almost surely, 2^688486422 is an apocalyptic number.

688486422 is an abundant number, since it is smaller than the sum of its proper divisors (813191658).

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

688486422 is a wasteful number, since it uses less digits than its factorization.

688486422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111828.

The product of its digits is 1179648, while the sum is 48.

The square root of 688486422 is about 26239.0247913294. The cubic root of 688486422 is about 883.0089928103.

It can be divided in two parts, 6884864 and 22, that added together give a palindrome (6884886).

The spelling of 688486422 in words is "six hundred eighty-eight million, four hundred eighty-six thousand, four hundred twenty-two".