83206861 has 4 divisors (see below), whose sum is σ = 83404924. Its totient is φ = 83008800.

The previous prime is 83206859. The next prime is 83206913. The reversal of 83206861 is 16860238.

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 9418761 + 73788100 = 3069^2 + 8590^2 .

It is a cyclic number.

It is not a de Polignac number, because 83206861 - 2¹ = 83206859 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 (83206061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98400 + ... + 99241.

It is an arithmetic number, because the mean of its divisors is an integer number (20851231).

Almost surely, 2^83206861 is an apocalyptic number.

It is an amenable number.

83206861 is a deficient number, since it is larger than the sum of its proper divisors (198063).

83206861 is a wasteful number, since it uses less digits than its factorization.

83206861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198062.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 83206861 is about 9121.7794864818. The cubic root of 83206861 is about 436.5691529692.

The spelling of 83206861 in words is "eighty-three million, two hundred six thousand, eight hundred sixty-one".