83685211 has 4 divisors (see below), whose sum is σ = 84934312. Its totient is φ = 82436112.

The previous prime is 83685209. The next prime is 83685221. The reversal of 83685211 is 11258638.

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

It is a cyclic number.

It is not a de Polignac number, because 83685211 - 2¹ = 83685209 is a prime.

It is a super-2 number, since 2×83685211² = 14006429080229042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83685221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 624450 + ... + 624583.

It is an arithmetic number, because the mean of its divisors is an integer number (21233578).

Almost surely, 2^83685211 is an apocalyptic number.

83685211 is a deficient number, since it is larger than the sum of its proper divisors (1249101).

83685211 is a wasteful number, since it uses less digits than its factorization.

83685211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1249100.

The product of its digits is 11520, while the sum is 34.

The square root of 83685211 is about 9147.9621227900. The cubic root of 83685211 is about 437.4041559844.

The spelling of 83685211 in words is "eighty-three million, six hundred eighty-five thousand, two hundred eleven".