80920609 has 12 divisors (see below), whose sum is σ = 102690288. Its totient is φ = 63054600.

The previous prime is 80920607. The next prime is 80920613. The reversal of 80920609 is 90602908.

It is not a de Polignac number, because 80920609 - 2¹ = 80920607 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80920603) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74527 + ... + 75604.

It is an arithmetic number, because the mean of its divisors is an integer number (8557524).

Almost surely, 2^80920609 is an apocalyptic number.

It is an amenable number.

80920609 is a deficient number, since it is larger than the sum of its proper divisors (21769679).

80920609 is a wasteful number, since it uses less digits than its factorization.

80920609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150156 (or 150149 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 80920609 is about 8995.5883076095. The cubic root of 80920609 is about 432.5334648390.

The spelling of 80920609 in words is "eighty million, nine hundred twenty thousand, six hundred nine".