89866605664 has 48 divisors (see below), whose sum is σ = 193155411456. Its totient is φ = 40817462400.

The previous prime is 89866605643. The next prime is 89866605667. The reversal of 89866605664 is 46650666898.

It is a junction number, because it is equal to n+sod(n) for n = 89866605596 and 89866605605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89866605667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 370909 + ... + 563299.

It is an arithmetic number, because the mean of its divisors is an integer number (4024071072).

Almost surely, 2^89866605664 is an apocalyptic number.

It is an amenable number.

89866605664 is an abundant number, since it is smaller than the sum of its proper divisors (103288805792).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

89866605664 is a wasteful number, since it uses less digits than its factorization.

89866605664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193739 (or 193731 counting only the distinct ones).

The product of its (nonzero) digits is 89579520, while the sum is 64.

The spelling of 89866605664 in words is "eighty-nine billion, eight hundred sixty-six million, six hundred five thousand, six hundred sixty-four".