81614441 has 8 divisors (see below), whose sum is σ = 82446144. Its totient is φ = 80786160.

The previous prime is 81614417. The next prime is 81614447. The reversal of 81614441 is 14441618.

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 81614441 - 2²² = 77420137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (81614447) 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, 98756 + ... + 99578.

It is an arithmetic number, because the mean of its divisors is an integer number (10305768).

Almost surely, 2^81614441 is an apocalyptic number.

It is an amenable number.

81614441 is a deficient number, since it is larger than the sum of its proper divisors (831703).

81614441 is a wasteful number, since it uses less digits than its factorization.

81614441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1711.

The product of its digits is 3072, while the sum is 29.

The square root of 81614441 is about 9034.0711199326. The cubic root of 81614441 is about 433.7661623368.

The spelling of 81614441 in words is "eighty-one million, six hundred fourteen thousand, four hundred forty-one".