89719947660 has 576 divisors, whose sum is σ = 323886366720. Its totient is φ = 18416885760.

The previous prime is 89719947607. The next prime is 89719947683. The reversal of 89719947660 is 6674991798.

It is a super-2 number, since 2×89719947660² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 89719947591 and 89719947600.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 122400654 + ... + 122401386.

It is an arithmetic number, because the mean of its divisors is an integer number (562302720).

Almost surely, 2^89719947660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89719947660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161943183360).

89719947660 is an abundant number, since it is smaller than the sum of its proper divisors (234166419060).

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

89719947660 is a wasteful number, since it uses less digits than its factorization.

89719947660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886 (or 877 counting only the distinct ones).

The product of its (nonzero) digits is 41150592, while the sum is 66.

The spelling of 89719947660 in words is "eighty-nine billion, seven hundred nineteen million, nine hundred forty-seven thousand, six hundred sixty".