80404563 has 4 divisors (see below), whose sum is σ = 107206088. Its totient is φ = 53603040.

The previous prime is 80404553. The next prime is 80404579. The reversal of 80404563 is 36540408.

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

It is not a de Polignac number, because 80404563 - 2⁴ = 80404547 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80404563.

It is not an unprimeable number, because it can be changed into a prime (80404553) 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, 13400758 + ... + 13400763.

It is an arithmetic number, because the mean of its divisors is an integer number (26801522).

Almost surely, 2^80404563 is an apocalyptic number.

80404563 is a deficient number, since it is larger than the sum of its proper divisors (26801525).

80404563 is a wasteful number, since it uses less digits than its factorization.

80404563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26801524.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 80404563 is about 8966.8591491112. The cubic root of 80404563 is about 431.6120541979.

The spelling of 80404563 in words is "eighty million, four hundred four thousand, five hundred sixty-three".