6666746896 has 40 divisors (see below), whose sum is σ = 13370941080. Its totient is φ = 3216331776.

The previous prime is 6666746893. The next prime is 6666746909. The reversal of 6666746896 is 6986476666.

It can be written as a sum of positive squares in 4 ways, for example, as 340771600 + 6325975296 = 18460^2 + 79536^2 .

It is not an unprimeable number, because it can be changed into a prime (6666746893) 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, 893196 + ... + 900628.

It is an arithmetic number, because the mean of its divisors is an integer number (334273527).

Almost surely, 2^6666746896 is an apocalyptic number.

It is an amenable number.

6666746896 is an abundant number, since it is smaller than the sum of its proper divisors (6704194184).

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

6666746896 is a wasteful number, since it uses less digits than its factorization.

6666746896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9403 (or 9397 counting only the distinct ones).

The product of its digits is 94058496, while the sum is 64.

The square root of 6666746896 is about 81650.1493936172. The cubic root of 6666746896 is about 1882.0796076011.

The spelling of 6666746896 in words is "six billion, six hundred sixty-six million, seven hundred forty-six thousand, eight hundred ninety-six".