7916862664 has 8 divisors (see below), whose sum is σ = 14844117510. Its totient is φ = 3958431328.

The previous prime is 7916862661. The next prime is 7916862671. The reversal of 7916862664 is 4662686197.

It can be written as a sum of positive squares in only one way, i.e., 6328202500 + 1588660164 = 79550^2 + 39858^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (7916862661) 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, 494803909 + ... + 494803924.

Almost surely, 2^7916862664 is an apocalyptic number.

It is an amenable number.

7916862664 is a deficient number, since it is larger than the sum of its proper divisors (6927254846).

7916862664 is a wasteful number, since it uses less digits than its factorization.

7916862664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989607839 (or 989607835 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 55.

The square root of 7916862664 is about 88976.7535033730. The cubic root of 7916862664 is about 1993.0477497775.

The spelling of 7916862664 in words is "seven billion, nine hundred sixteen million, eight hundred sixty-two thousand, six hundred sixty-four".