6870660786 has 128 divisors (see below), whose sum is σ = 17477959680. Its totient is φ = 1980316800.

The previous prime is 6870660767. The next prime is 6870660887.

6870660786 is nontrivially palindromic in base 10.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2608126 + ... + 2610758.

It is an arithmetic number, because the mean of its divisors is an integer number (136546560).

Almost surely, 2^6870660786 is an apocalyptic number.

6870660786 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 6870660786, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8738979840).

6870660786 is an abundant number, since it is smaller than the sum of its proper divisors (10607298894).

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

6870660786 is a wasteful number, since it uses less digits than its factorization.

6870660786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2869 (or 2863 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 54.

The square root of 6870660786 is about 82889.4491838376. The cubic root of 6870660786 is about 1901.0761019557.

The spelling of 6870660786 in words is "six billion, eight hundred seventy million, six hundred sixty thousand, seven hundred eighty-six".