6911247940 has 12 divisors (see below), whose sum is σ = 14513620716. Its totient is φ = 2764499168.

The previous prime is 6911247923. The next prime is 6911247947. The reversal of 6911247940 is 497421196.

It can be written as a sum of positive squares in 2 ways, for example, as 1437319744 + 5473928196 = 37912^2 + 73986^2 .

It is not an unprimeable number, because it can be changed into a prime (6911247947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172781179 + ... + 172781218.

It is an arithmetic number, because the mean of its divisors is an integer number (1209468393).

Almost surely, 2^6911247940 is an apocalyptic number.

It is an amenable number.

6911247940 is an abundant number, since it is smaller than the sum of its proper divisors (7602372776).

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

6911247940 is a wasteful number, since it uses less digits than its factorization.

6911247940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345562406 (or 345562404 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 6911247940 is about 83133.9157023173. The cubic root of 6911247940 is about 1904.8121730021.

The spelling of 6911247940 in words is "six billion, nine hundred eleven million, two hundred forty-seven thousand, nine hundred forty".