80644983 has 8 divisors (see below), whose sum is σ = 108571008. Its totient is φ = 53241144.

The previous prime is 80644973. The next prime is 80644999. The reversal of 80644983 is 38944608.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 80644983 - 2²⁵ = 47090551 is a prime.

It is a super-2 number, since 2×80644983² = 13007226566140578, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80644933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130185 + ... + 130802.

It is an arithmetic number, because the mean of its divisors is an integer number (13571376).

Almost surely, 2^80644983 is an apocalyptic number.

80644983 is a deficient number, since it is larger than the sum of its proper divisors (27926025).

80644983 is a wasteful number, since it uses less digits than its factorization.

80644983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261093.

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 80644983 is about 8980.2551745482. The cubic root of 80644983 is about 432.0418180112.

The spelling of 80644983 in words is "eighty million, six hundred forty-four thousand, nine hundred eighty-three".