80565506 has 24 divisors (see below), whose sum is σ = 142893756. Its totient is φ = 33959520.

The previous prime is 80565493. The next prime is 80565517. The reversal of 80565506 is 60556508.

It can be written as a sum of positive squares in 2 ways, for example, as 77176225 + 3389281 = 8785^2 + 1841^2 .

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 761 + ... + 12716.

Almost surely, 2^80565506 is an apocalyptic number.

80565506 is a deficient number, since it is larger than the sum of its proper divisors (62328250).

80565506 is a wasteful number, since it uses less digits than its factorization.

80565506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13554 (or 13547 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 35.

The square root of 80565506 is about 8975.8289867845. The cubic root of 80565506 is about 431.8998431790.

The spelling of 80565506 in words is "eighty million, five hundred sixty-five thousand, five hundred six".