83666541 has 16 divisors (see below), whose sum is σ = 129240704. Its totient is φ = 47153664.

The previous prime is 83666483. The next prime is 83666549. The reversal of 83666541 is 14566638.

It is not a de Polignac number, because 83666541 - 2⁹ = 83666029 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 83666541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83666549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25756 + ... + 28821.

It is an arithmetic number, because the mean of its divisors is an integer number (8077544).

Almost surely, 2^83666541 is an apocalyptic number.

It is an amenable number.

83666541 is a deficient number, since it is larger than the sum of its proper divisors (45574163).

83666541 is a wasteful number, since it uses less digits than its factorization.

83666541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54660.

The product of its digits is 103680, while the sum is 39.

The square root of 83666541 is about 9146.9416200170. The cubic root of 83666541 is about 437.3716255732.

The spelling of 83666541 in words is "eighty-three million, six hundred sixty-six thousand, five hundred forty-one".