688426244 has 48 divisors (see below), whose sum is σ = 1392854400. Its totient is φ = 294739200.

The previous prime is 688426241. The next prime is 688426247. The reversal of 688426244 is 442624886.

It is an interprime number because it is at equal distance from previous prime (688426241) and next prime (688426247).

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 688426195 and 688426204.

It is not an unprimeable number, because it can be changed into a prime (688426241) 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, 45737 + ... + 58895.

It is an arithmetic number, because the mean of its divisors is an integer number (29017800).

Almost surely, 2^688426244 is an apocalyptic number.

It is an amenable number.

688426244 is an abundant number, since it is smaller than the sum of its proper divisors (704428156).

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

688426244 is a wasteful number, since it uses less digits than its factorization.

688426244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13244 (or 13242 counting only the distinct ones).

The product of its digits is 589824, while the sum is 44.

The square root of 688426244 is about 26237.8780392013. The cubic root of 688426244 is about 882.9832652327.

The spelling of 688426244 in words is "six hundred eighty-eight million, four hundred twenty-six thousand, two hundred forty-four".