688429196 has 96 divisors (see below), whose sum is σ = 1533654528. Its totient is φ = 263139840.

The previous prime is 688429193. The next prime is 688429199. The reversal of 688429196 is 691924886.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (688429193) and next prime (688429199).

It is not an unprimeable number, because it can be changed into a prime (688429193) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2432471 + ... + 2432753.

It is an arithmetic number, because the mean of its divisors is an integer number (15975568).

Almost surely, 2^688429196 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 688429196, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (766827264).

688429196 is an abundant number, since it is smaller than the sum of its proper divisors (845225332).

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

688429196 is a wasteful number, since it uses less digits than its factorization.

688429196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511 (or 509 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 53.

The square root of 688429196 is about 26237.9342936901. The cubic root of 688429196 is about 882.9845273204.

The spelling of 688429196 in words is "six hundred eighty-eight million, four hundred twenty-nine thousand, one hundred ninety-six".