83302813 has 6 divisors (see below), whose sum is σ = 91564382. Its totient is φ = 75729720.

The previous prime is 83302781. The next prime is 83302837. The reversal of 83302813 is 31820338.

It can be written as a sum of positive squares in only one way, i.e., 81757764 + 1545049 = 9042^2 + 1243^2 .

It is not a de Polignac number, because 83302813 - 2⁵ = 83302781 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 (83302013) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 344106 + ... + 344347.

Almost surely, 2^83302813 is an apocalyptic number.

It is an amenable number.

83302813 is a deficient number, since it is larger than the sum of its proper divisors (8261569).

83302813 is a wasteful number, since it uses less digits than its factorization.

83302813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688475 (or 688464 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 83302813 is about 9127.0374711623. The cubic root of 83302813 is about 436.7369019230.

The spelling of 83302813 in words is "eighty-three million, three hundred two thousand, eight hundred thirteen".