80862509 has 16 divisors (see below), whose sum is σ = 101216640. Its totient is φ = 62890560.

The previous prime is 80862497. The next prime is 80862517. The reversal of 80862509 is 90526808.

It is a cyclic number.

It is not a de Polignac number, because 80862509 - 2⁴ = 80862493 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80862559) 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, 2162 + ... + 12899.

It is an arithmetic number, because the mean of its divisors is an integer number (6326040).

Almost surely, 2^80862509 is an apocalyptic number.

It is an amenable number.

80862509 is a deficient number, since it is larger than the sum of its proper divisors (20354131).

80862509 is a wasteful number, since it uses less digits than its factorization.

80862509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15140.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 80862509 is about 8992.3583669691. The cubic root of 80862509 is about 432.4299221552.

The spelling of 80862509 in words is "eighty million, eight hundred sixty-two thousand, five hundred nine".