6894736940 has 144 divisors (see below), whose sum is σ = 17986223808. Its totient is φ = 2173796352.

The previous prime is 6894736897. The next prime is 6894736943. The reversal of 6894736940 is 496374986.

It is not an unprimeable number, because it can be changed into a prime (6894736943) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10244444 + ... + 10245116.

It is an arithmetic number, because the mean of its divisors is an integer number (124904332).

Almost surely, 2^6894736940 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6894736940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8993111904).

6894736940 is an abundant number, since it is smaller than the sum of its proper divisors (11091486868).

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

6894736940 is a wasteful number, since it uses less digits than its factorization.

6894736940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148 (or 1133 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 56.

The square root of 6894736940 is about 83034.5526874204. The cubic root of 6894736940 is about 1903.2940954005.

The spelling of 6894736940 in words is "six billion, eight hundred ninety-four million, seven hundred thirty-six thousand, nine hundred forty".