7664718979 has 16 divisors (see below), whose sum is σ = 7924331520. Its totient is φ = 7408044000.

The previous prime is 7664718931. The next prime is 7664719021. The reversal of 7664718979 is 9798174667.

It is a cyclic number.

It is not a de Polignac number, because 7664718979 - 2¹¹ = 7664716931 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7664718979.

It is not an unprimeable number, because it can be changed into a prime (7664718079) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4447612 + ... + 4449334.

It is an arithmetic number, because the mean of its divisors is an integer number (495270720).

Almost surely, 2^7664718979 is an apocalyptic number.

7664718979 is a deficient number, since it is larger than the sum of its proper divisors (259612541).

7664718979 is a wasteful number, since it uses less digits than its factorization.

7664718979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2490.

The product of its digits is 32006016, while the sum is 64.

The square root of 7664718979 is about 87548.3807902808. The cubic root of 7664718979 is about 1971.6602406748.

The spelling of 7664718979 in words is "seven billion, six hundred sixty-four million, seven hundred eighteen thousand, nine hundred seventy-nine".