8645907870 has 64 divisors (see below), whose sum is σ = 23094550080. Its totient is φ = 2301696000.

The previous prime is 8645907847. The next prime is 8645907871. The reversal of 8645907870 is 787095468.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8645907871) 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, 135630 + ... + 188910.

It is an arithmetic number, because the mean of its divisors is an integer number (360852345).

Almost surely, 2^8645907870 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8645907870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11547275040).

8645907870 is an abundant number, since it is smaller than the sum of its proper divisors (14448642210).

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

8645907870 is a wasteful number, since it uses less digits than its factorization.

8645907870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53898 (or 53892 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 54.

The square root of 8645907870 is about 92983.3741590399. The cubic root of 8645907870 is about 2052.4387292472.

The spelling of 8645907870 in words is "eight billion, six hundred forty-five million, nine hundred seven thousand, eight hundred seventy".