7971242684 has 6 divisors (see below), whose sum is σ = 13949674704. Its totient is φ = 3985621340.

The previous prime is 7971242683. The next prime is 7971242801. The reversal of 7971242684 is 4862421797.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7971242681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 996405332 + ... + 996405339.

It is an arithmetic number, because the mean of its divisors is an integer number (2324945784).

Almost surely, 2^7971242684 is an apocalyptic number.

It is an amenable number.

7971242684 is a deficient number, since it is larger than the sum of its proper divisors (5978432020).

7971242684 is a wasteful number, since it uses less digits than its factorization.

7971242684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1992810675 (or 1992810673 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 50.

The square root of 7971242684 is about 89281.8160881599. The cubic root of 7971242684 is about 1997.6006797823.

The spelling of 7971242684 in words is "seven billion, nine hundred seventy-one million, two hundred forty-two thousand, six hundred eighty-four".