688422280891 has 8 divisors (see below), whose sum is σ = 718796877984. Its totient is φ = 658084616640.

The previous prime is 688422280883. The next prime is 688422280963. The reversal of 688422280891 is 198082224886.

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

It is a cyclic number.

It is not a de Polignac number, because 688422280891 - 2³ = 688422280883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (688422280991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9195106 + ... + 9269671.

It is an arithmetic number, because the mean of its divisors is an integer number (89849609748).

Almost surely, 2^688422280891 is an apocalyptic number.

688422280891 is a deficient number, since it is larger than the sum of its proper divisors (30374597093).

688422280891 is a wasteful number, since it uses less digits than its factorization.

688422280891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18466421.

The product of its (nonzero) digits is 7077888, while the sum is 58.

The spelling of 688422280891 in words is "six hundred eighty-eight billion, four hundred twenty-two million, two hundred eighty thousand, eight hundred ninety-one".