80665713 has 20 divisors (see below), whose sum is σ = 120746868. Its totient is φ = 53667360.

The previous prime is 80665703. The next prime is 80665723. The reversal of 80665713 is 31756608.

80665713 is a `hidden beast` number, since 80 + 6 + 6 + 571 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (80665703) and next prime (80665723).

It can be written as a sum of positive squares in 2 ways, for example, as 10909809 + 69755904 = 3303^2 + 8352^2 .

It is not a de Polignac number, because 80665713 - 2⁶ = 80665649 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (80665703) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 65895 + ... + 67107.

Almost surely, 2^80665713 is an apocalyptic number.

It is an amenable number.

80665713 is a deficient number, since it is larger than the sum of its proper divisors (40081155).

80665713 is a wasteful number, since it uses less digits than its factorization.

80665713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2046 (or 2037 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 80665713 is about 8981.4092992136. The cubic root of 80665713 is about 432.0788339926.

The spelling of 80665713 in words is "eighty million, six hundred sixty-five thousand, seven hundred thirteen".