6861317040 has 60 divisors (see below), whose sum is σ = 23042592144. Its totient is φ = 1829684352.

The previous prime is 6861317009. The next prime is 6861317041. The reversal of 6861317040 is 407131686.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 6861316986 and 6861317004.

It is not an unprimeable number, because it can be changed into a prime (6861317041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4764084 + ... + 4765523.

Almost surely, 2^6861317040 is an apocalyptic number.

6861317040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6861317040 is an abundant number, since it is smaller than the sum of its proper divisors (16181275104).

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

6861317040 is a wasteful number, since it uses less digits than its factorization.

6861317040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9529626 (or 9529617 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 6861317040 is about 82833.0673101027. The cubic root of 6861317040 is about 1900.2139223585.

The spelling of 6861317040 in words is "six billion, eight hundred sixty-one million, three hundred seventeen thousand, forty".