80998583 has 4 divisors (see below), whose sum is σ = 81056928. Its totient is φ = 80940240.

The previous prime is 80998559. The next prime is 80998597. The reversal of 80998583 is 38589908.

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

It is a de Polignac number, because none of the positive numbers 2^k-80998583 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80998543) 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, 27038 + ... + 29883.

It is an arithmetic number, because the mean of its divisors is an integer number (20264232).

Almost surely, 2^80998583 is an apocalyptic number.

80998583 is a deficient number, since it is larger than the sum of its proper divisors (58345).

80998583 is a wasteful number, since it uses less digits than its factorization.

80998583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58344.

The product of its (nonzero) digits is 622080, while the sum is 50.

The square root of 80998583 is about 8999.9212774335. The cubic root of 80998583 is about 432.6723480310.

The spelling of 80998583 in words is "eighty million, nine hundred ninety-eight thousand, five hundred eighty-three".