80545065 has 32 divisors (see below), whose sum is σ = 137085696. Its totient is φ = 40243200.

The previous prime is 80545043. The next prime is 80545067. The reversal of 80545065 is 56054508.

It is not a de Polignac number, because 80545065 - 2¹² = 80540969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80545067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66465 + ... + 67665.

It is an arithmetic number, because the mean of its divisors is an integer number (4283928).

Almost surely, 2^80545065 is an apocalyptic number.

80545065 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

80545065 is a deficient number, since it is larger than the sum of its proper divisors (56540631).

80545065 is a wasteful number, since it uses less digits than its factorization.

80545065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1489.

The product of its (nonzero) digits is 24000, while the sum is 33.

The square root of 80545065 is about 8974.6902453511. The cubic root of 80545065 is about 431.8633130233.

The spelling of 80545065 in words is "eighty million, five hundred forty-five thousand, sixty-five".