80644111 has 8 divisors (see below), whose sum is σ = 82819584. Its totient is φ = 78492960.

The previous prime is 80644103. The next prime is 80644121. The reversal of 80644111 is 11144608.

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

It is a cyclic number.

It is not a de Polignac number, because 80644111 - 2³ = 80644103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80644121) 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, 741 + ... + 12721.

It is an arithmetic number, because the mean of its divisors is an integer number (10352448).

Almost surely, 2^80644111 is an apocalyptic number.

80644111 is a deficient number, since it is larger than the sum of its proper divisors (2175473).

80644111 is a wasteful number, since it uses less digits than its factorization.

80644111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12161.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 80644111 is about 8980.2066234581. The cubic root of 80644111 is about 432.0402608082.

Adding to 80644111 its reverse (11144608), we get a palindrome (91788719).

The spelling of 80644111 in words is "eighty million, six hundred forty-four thousand, one hundred eleven".