80568309 has 8 divisors (see below), whose sum is σ = 107527072. Its totient is φ = 53660880.

The previous prime is 80568307. The next prime is 80568317. The reversal of 80568309 is 90386508.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 80568309 - 2¹ = 80568307 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80568307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9007 + ... + 15564.

It is an arithmetic number, because the mean of its divisors is an integer number (13440884).

Almost surely, 2^80568309 is an apocalyptic number.

It is an amenable number.

80568309 is a deficient number, since it is larger than the sum of its proper divisors (26958763).

80568309 is a wasteful number, since it uses less digits than its factorization.

80568309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25667.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 80568309 is about 8975.9851269930. The cubic root of 80568309 is about 431.9048519447.

The spelling of 80568309 in words is "eighty million, five hundred sixty-eight thousand, three hundred nine".