83666441 has 4 divisors (see below), whose sum is σ = 85038084. Its totient is φ = 82294800.

The previous prime is 83666419. The next prime is 83666447. The reversal of 83666441 is 14466638.

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

It can be written as a sum of positive squares in 2 ways, for example, as 15768841 + 67897600 = 3971^2 + 8240^2 .

It is a cyclic number.

It is not a de Polignac number, because 83666441 - 2⁶ = 83666377 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 83666395 and 83666404.

It is not an unprimeable number, because it can be changed into a prime (83666447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 685730 + ... + 685851.

It is an arithmetic number, because the mean of its divisors is an integer number (21259521).

Almost surely, 2^83666441 is an apocalyptic number.

It is an amenable number.

83666441 is a deficient number, since it is larger than the sum of its proper divisors (1371643).

83666441 is a wasteful number, since it uses less digits than its factorization.

83666441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1371642.

The product of its digits is 82944, while the sum is 38.

The square root of 83666441 is about 9146.9361537074. The cubic root of 83666441 is about 437.3714513212.

The spelling of 83666441 in words is "eighty-three million, six hundred sixty-six thousand, four hundred forty-one".