86808604689 has 45 divisors (see below), whose sum is σ = 136940853753. Its totient is φ = 54794666808.

The previous prime is 86808604679. The next prime is 86808604691. The reversal of 86808604689 is 98640680868.

The square root of 86808604689 is 294633.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 86808604689 - 2³⁵ = 52448866321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86808604679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 50381382 + ... + 50383104.

Almost surely, 2^86808604689 is an apocalyptic number.

86808604689 is the 294633-rd square number.

86808604689 is the 147317-th centered octagonal number.

It is an amenable number.

86808604689 is a deficient number, since it is larger than the sum of its proper divisors (50132249064).

86808604689 is an frugal number, since it uses more digits than its factorization.

86808604689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3496 (or 1745 counting only the distinct ones).

The product of its (nonzero) digits is 31850496, while the sum is 63.

The spelling of 86808604689 in words is "eighty-six billion, eight hundred eight million, six hundred four thousand, six hundred eighty-nine".