8700687840 has 288 divisors, whose sum is σ = 29861032320. Its totient is φ = 2128508928.

The previous prime is 8700687823. The next prime is 8700687869. The reversal of 8700687840 is 487860078.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 8700687840.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 22956771 + ... + 22957149.

It is an arithmetic number, because the mean of its divisors is an integer number (103684140).

Almost surely, 2^8700687840 is an apocalyptic number.

8700687840 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8700687840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14930516160).

8700687840 is an abundant number, since it is smaller than the sum of its proper divisors (21160344480).

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

8700687840 is a wasteful number, since it uses less digits than its factorization.

8700687840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706 (or 685 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 48.

The square root of 8700687840 is about 93277.4776674412. The cubic root of 8700687840 is about 2056.7643173633.

The spelling of 8700687840 in words is "eight billion, seven hundred million, six hundred eighty-seven thousand, eight hundred forty".