80559631 has 4 divisors (see below), whose sum is σ = 81042192. Its totient is φ = 80077072.

The previous prime is 80559599. The next prime is 80559649. The reversal of 80559631 is 13695508.

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

It is a cyclic number.

It is not a de Polignac number, because 80559631 - 2⁵ = 80559599 is a prime.

It is a super-2 number, since 2×80559631² = 12979708293712322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80559331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 241030 + ... + 241363.

It is an arithmetic number, because the mean of its divisors is an integer number (20260548).

Almost surely, 2^80559631 is an apocalyptic number.

80559631 is a deficient number, since it is larger than the sum of its proper divisors (482561).

80559631 is a wasteful number, since it uses less digits than its factorization.

80559631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482560.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 80559631 is about 8975.5017129963. The cubic root of 80559631 is about 431.8893445865.

The spelling of 80559631 in words is "eighty million, five hundred fifty-nine thousand, six hundred thirty-one".