80673565 has 16 divisors (see below), whose sum is σ = 110828160. Its totient is φ = 55224000.

The previous prime is 80673539. The next prime is 80673569. The reversal of 80673565 is 56537608.

It is not a de Polignac number, because 80673565 - 2⁹ = 80673053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80673569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23190 + ... + 26440.

It is an arithmetic number, because the mean of its divisors is an integer number (6926760).

Almost surely, 2^80673565 is an apocalyptic number.

It is an amenable number.

80673565 is a deficient number, since it is larger than the sum of its proper divisors (30154595).

80673565 is a wasteful number, since it uses less digits than its factorization.

80673565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3972.

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 80673565 is about 8981.8464137392. The cubic root of 80673565 is about 432.0928530548.

The spelling of 80673565 in words is "eighty million, six hundred seventy-three thousand, five hundred sixty-five".