6870990786 has 64 divisors (see below), whose sum is σ = 15793920000. Its totient is φ = 1970827200.

The previous prime is 6870990733. The next prime is 6870990803.

6870990786 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2505376 + ... + 2508116.

It is an arithmetic number, because the mean of its divisors is an integer number (246780000).

Almost surely, 2^6870990786 is an apocalyptic number.

6870990786 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 6870990786, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7896960000).

6870990786 is an abundant number, since it is smaller than the sum of its proper divisors (8922929214).

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

6870990786 is a wasteful number, since it uses less digits than its factorization.

6870990786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4775.

The product of its (nonzero) digits is 9144576, while the sum is 60.

The square root of 6870990786 is about 82891.4397631022. The cubic root of 6870990786 is about 1901.1065378962.

The spelling of 6870990786 in words is "six billion, eight hundred seventy million, nine hundred ninety thousand, seven hundred eighty-six".