83693213 has 4 divisors (see below), whose sum is σ = 83715900. Its totient is φ = 83670528.

The previous prime is 83693173. The next prime is 83693263. The reversal of 83693213 is 31239638.

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 48135844 + 35557369 = 6938^2 + 5963^2 .

It is a cyclic number.

It is not a de Polignac number, because 83693213 - 2⁸ = 83692957 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 (83693263) 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, 4388 + ... + 13661.

It is an arithmetic number, because the mean of its divisors is an integer number (20928975).

Almost surely, 2^83693213 is an apocalyptic number.

It is an amenable number.

83693213 is a deficient number, since it is larger than the sum of its proper divisors (22687).

83693213 is a wasteful number, since it uses less digits than its factorization.

83693213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22686.

The product of its digits is 23328, while the sum is 35.

The square root of 83693213 is about 9148.3994775042. The cubic root of 83693213 is about 437.4180971036.

It can be divided in two parts, 836 and 93213, that added together give a palindrome (94049).

The spelling of 83693213 in words is "eighty-three million, six hundred ninety-three thousand, two hundred thirteen".