688881473474 has 8 divisors (see below), whose sum is σ = 1061249837628. Its totient is φ = 335131527600.

The previous prime is 688881473419. The next prime is 688881473477. The reversal of 688881473474 is 474374188886.

It can be written as a sum of positive squares in 2 ways, for example, as 688858500625 + 22972849 = 829975^2 + 4793^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (688881473477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4654604477 + ... + 4654604624.

Almost surely, 2^688881473474 is an apocalyptic number.

688881473474 is a deficient number, since it is larger than the sum of its proper divisors (372368364154).

688881473474 is a wasteful number, since it uses less digits than its factorization.

688881473474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9309209140.

The product of its digits is 231211008, while the sum is 68.

The spelling of 688881473474 in words is "six hundred eighty-eight billion, eight hundred eighty-one million, four hundred seventy-three thousand, four hundred seventy-four".