688820604411875 has 20 divisors (see below), whose sum is σ = 926961783228096. Its totient is φ = 508667523252000.

The previous prime is 688820604411817. The next prime is 688820604411889. The reversal of 688820604411875 is 578114406028886.

It is a happy number.

It is not a de Polignac number, because 688820604411875 - 2¹⁴ = 688820604395491 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 42388952147 + ... + 42388968396.

Almost surely, 2^{688820604411875} is an apocalyptic number.

688820604411875 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

688820604411875 is a deficient number, since it is larger than the sum of its proper divisors (238141178816221).

688820604411875 is an equidigital number, since it uses as much as digits as its factorization.

688820604411875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84777920576 (or 84777920561 counting only the distinct ones).

The product of its (nonzero) digits is 165150720, while the sum is 68.

The spelling of 688820604411875 in words is "six hundred eighty-eight trillion, eight hundred twenty billion, six hundred four million, four hundred eleven thousand, eight hundred seventy-five".