6860408787 has 18 divisors (see below), whose sum is σ = 10060364652. Its totient is φ = 4504007376.

The previous prime is 6860408783. The next prime is 6860408827. The reversal of 6860408787 is 7878040686.

6860408787 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6860408787 - 2² = 6860408783 is a prime.

It is a super-2 number, since 2×6860408787² = 94130417449493622738, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6860408783) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2032233 + ... + 2035605.

Almost surely, 2^6860408787 is an apocalyptic number.

6860408787 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

6860408787 is a deficient number, since it is larger than the sum of its proper divisors (3199955865).

6860408787 is an frugal number, since it uses more digits than its factorization.

6860408787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6819 (or 3443 counting only the distinct ones).

The product of its (nonzero) digits is 3612672, while the sum is 54.

The square root of 6860408787 is about 82827.5846985773. The cubic root of 6860408787 is about 1900.1300729972.

The spelling of 6860408787 in words is "six billion, eight hundred sixty million, four hundred eight thousand, seven hundred eighty-seven".