6866005940 has 24 divisors (see below), whose sum is σ = 14426389320. Its totient is φ = 2744921088.

The previous prime is 6866005933. The next prime is 6866005943. The reversal of 6866005940 is 495006686.

It can be written as a sum of positive squares in 4 ways, for example, as 293985316 + 6572020624 = 17146^2 + 81068^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6866005891 and 6866005900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6866005943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54185 + ... + 129104.

It is an arithmetic number, because the mean of its divisors is an integer number (601099555).

Almost surely, 2^6866005940 is an apocalyptic number.

It is an amenable number.

6866005940 is an abundant number, since it is smaller than the sum of its proper divisors (7560383380).

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

6866005940 is a wasteful number, since it uses less digits than its factorization.

6866005940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185171 (or 185169 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 44.

The square root of 6866005940 is about 82861.3657864749. The cubic root of 6866005940 is about 1900.6466810720.

The spelling of 6866005940 in words is "six billion, eight hundred sixty-six million, five thousand, nine hundred forty".