6466878746 has 12 divisors (see below), whose sum is σ = 9756803742. Its totient is φ = 3214719216.

The previous prime is 6466878739. The next prime is 6466878773. The reversal of 6466878746 is 6478786646.

It can be written as a sum of positive squares in 3 ways, for example, as 6372030625 + 94848121 = 79825^2 + 9739^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5840 + ... + 113876.

Almost surely, 2^6466878746 is an apocalyptic number.

6466878746 is a deficient number, since it is larger than the sum of its proper divisors (3289924996).

6466878746 is a wasteful number, since it uses less digits than its factorization.

6466878746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108385 (or 108212 counting only the distinct ones).

The product of its digits is 65028096, while the sum is 62.

The square root of 6466878746 is about 80416.9058469673. The cubic root of 6466878746 is about 1863.0802956506.

The spelling of 6466878746 in words is "six billion, four hundred sixty-six million, eight hundred seventy-eight thousand, seven hundred forty-six".