7972059866 has 32 divisors (see below), whose sum is σ = 12963469392. Its totient is φ = 3662991360.

The previous prime is 7972059859. The next prime is 7972059869. The reversal of 7972059866 is 6689502797.

It can be written as a sum of positive squares in 8 ways, for example, as 3268980625 + 4703079241 = 57175^2 + 68579^2 .

It is not an unprimeable number, because it can be changed into a prime (7972059869) 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, 270110 + ... + 298166.

Almost surely, 2^7972059866 is an apocalyptic number.

7972059866 is a deficient number, since it is larger than the sum of its proper divisors (4991409526).

7972059866 is a wasteful number, since it uses less digits than its factorization.

7972059866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28274.

The product of its (nonzero) digits is 11430720, while the sum is 59.

The square root of 7972059866 is about 89286.3923898821. The cubic root of 7972059866 is about 1997.6689396343.

The spelling of 7972059866 in words is "seven billion, nine hundred seventy-two million, fifty-nine thousand, eight hundred sixty-six".