80565015 has 16 divisors (see below), whose sum is σ = 131902848. Its totient is φ = 41968416.

The previous prime is 80565013. The next prime is 80565019. The reversal of 80565015 is 51056508.

It is a happy number.

It is not a de Polignac number, because 80565015 - 2¹ = 80565013 is a prime.

It is a super-3 number, since 3×80565015³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80565011) 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, 61809 + ... + 63098.

It is an arithmetic number, because the mean of its divisors is an integer number (8243928).

Almost surely, 2^80565015 is an apocalyptic number.

80565015 is a deficient number, since it is larger than the sum of its proper divisors (51337833).

80565015 is a wasteful number, since it uses less digits than its factorization.

80565015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124958.

The product of its (nonzero) digits is 6000, while the sum is 30.

The square root of 80565015 is about 8975.8016355087. The cubic root of 80565015 is about 431.8989657843.

The spelling of 80565015 in words is "eighty million, five hundred sixty-five thousand, fifteen".