83366321 has 4 divisors (see below), whose sum is σ = 84733044. Its totient is φ = 81999600.

The previous prime is 83366299. The next prime is 83366323. The reversal of 83366321 is 12366338.

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 48497296 + 34869025 = 6964^2 + 5905^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83366321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83366323) 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, 683270 + ... + 683391.

It is an arithmetic number, because the mean of its divisors is an integer number (21183261).

Almost surely, 2^83366321 is an apocalyptic number.

It is an amenable number.

83366321 is a deficient number, since it is larger than the sum of its proper divisors (1366723).

83366321 is a wasteful number, since it uses less digits than its factorization.

83366321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1366722.

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

The square root of 83366321 is about 9130.5159218962. The cubic root of 83366321 is about 436.8478595272.

The spelling of 83366321 in words is "eighty-three million, three hundred sixty-six thousand, three hundred twenty-one".