8170390680 has 128 divisors (see below), whose sum is σ = 24989065920. Its totient is φ = 2136637440.

The previous prime is 8170390673. The next prime is 8170390681. The reversal of 8170390680 is 860930718.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8170390681) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1582984 + ... + 1588136.

Almost surely, 2^8170390680 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 8170390680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12494532960).

8170390680 is an abundant number, since it is smaller than the sum of its proper divisors (16818675240).

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

8170390680 is a wasteful number, since it uses less digits than its factorization.

8170390680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5421 (or 5417 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 8170390680 is about 90390.2134083110. The cubic root of 8170390680 is about 2014.0995905254.

The spelling of 8170390680 in words is "eight billion, one hundred seventy million, three hundred ninety thousand, six hundred eighty".