80536609 has 4 divisors (see below), whose sum is σ = 80560660. Its totient is φ = 80512560.

The previous prime is 80536607. The next prime is 80536637. The reversal of 80536609 is 90663508.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11696400 + 68840209 = 3420^2 + 8297^2 .

It is a cyclic number.

It is not a de Polignac number, because 80536609 - 2¹ = 80536607 is a prime.

It is a super-2 number, since 2×80536609² = 12972290778437762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80536607) 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 3 ways as a sum of consecutive naturals, for example, 5994 + ... + 14035.

It is an arithmetic number, because the mean of its divisors is an integer number (20140165).

Almost surely, 2^80536609 is an apocalyptic number.

It is an amenable number.

80536609 is a deficient number, since it is larger than the sum of its proper divisors (24051).

80536609 is a wasteful number, since it uses less digits than its factorization.

80536609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24050.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 80536609 is about 8974.2191303756. The cubic root of 80536609 is about 431.8481994800.

The spelling of 80536609 in words is "eighty million, five hundred thirty-six thousand, six hundred nine".