83681443 has 8 divisors (see below), whose sum is σ = 87252480. Its totient is φ = 80156160.

The previous prime is 83681441. The next prime is 83681467. The reversal of 83681443 is 34418638.

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 83681443 - 2¹ = 83681441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83681441) 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, 7678 + ... + 15043.

It is an arithmetic number, because the mean of its divisors is an integer number (10906560).

Almost surely, 2^83681443 is an apocalyptic number.

83681443 is a deficient number, since it is larger than the sum of its proper divisors (3571037).

83681443 is a wasteful number, since it uses less digits than its factorization.

83681443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22877.

The product of its digits is 55296, while the sum is 37.

The square root of 83681443 is about 9147.7561729639. The cubic root of 83681443 is about 437.3975910506.

The spelling of 83681443 in words is "eighty-three million, six hundred eighty-one thousand, four hundred forty-three".