6749379976 has 16 divisors (see below), whose sum is σ = 12893863500. Its totient is φ = 3311016384.

The previous prime is 6749379947. The next prime is 6749379991. The reversal of 6749379976 is 6799739476.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6654317476 + 95062500 = 81574^2 + 9750^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7958751 + ... + 7959598.

Almost surely, 2^6749379976 is an apocalyptic number.

It is an amenable number.

6749379976 is a deficient number, since it is larger than the sum of its proper divisors (6144483524).

6749379976 is a wasteful number, since it uses less digits than its factorization.

6749379976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15918408 (or 15918404 counting only the distinct ones).

The product of its digits is 108020304, while the sum is 67.

The square root of 6749379976 is about 82154.6101932204. The cubic root of 6749379976 is about 1889.8237077898.

The spelling of 6749379976 in words is "six billion, seven hundred forty-nine million, three hundred seventy-nine thousand, nine hundred seventy-six".