83636213 has 4 divisors (see below), whose sum is σ = 84498540. Its totient is φ = 82773888.

The previous prime is 83636207. The next prime is 83636219. The reversal of 83636213 is 31263638.

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

It is an interprime number because it is at equal distance from previous prime (83636207) and next prime (83636219).

It can be written as a sum of positive squares in 2 ways, for example, as 32341969 + 51294244 = 5687^2 + 7162^2 .

It is a cyclic number.

It is not a de Polignac number, because 83636213 - 2⁶ = 83636149 is a prime.

It is a super-2 number, since 2×83636213² = 13990032249962738, which contains 22 as substring.

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 83636213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83636219) 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, 431018 + ... + 431211.

It is an arithmetic number, because the mean of its divisors is an integer number (21124635).

Almost surely, 2^83636213 is an apocalyptic number.

It is an amenable number.

83636213 is a deficient number, since it is larger than the sum of its proper divisors (862327).

83636213 is an equidigital number, since it uses as much as digits as its factorization.

83636213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862326.

The product of its digits is 15552, while the sum is 32.

The square root of 83636213 is about 9145.2836478701. The cubic root of 83636213 is about 437.3187720686.

The spelling of 83636213 in words is "eighty-three million, six hundred thirty-six thousand, two hundred thirteen".