688496625499 has 4 divisors (see below), whose sum is σ = 688498688664. Its totient is φ = 688494562336.

The previous prime is 688496625491. The next prime is 688496625587. The reversal of 688496625499 is 994526694886.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 688496625499 - 2³ = 688496625491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (688496625491) 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 3 ways as a sum of consecutive naturals, for example, 403582 + ... + 1240915.

It is an arithmetic number, because the mean of its divisors is an integer number (172124672166).

Almost surely, 2^688496625499 is an apocalyptic number.

688496625499 is a deficient number, since it is larger than the sum of its proper divisors (2063165).

688496625499 is a wasteful number, since it uses less digits than its factorization.

688496625499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2063164.

The product of its digits is 1612431360, while the sum is 76.

The spelling of 688496625499 in words is "six hundred eighty-eight billion, four hundred ninety-six million, six hundred twenty-five thousand, four hundred ninety-nine".