83816513 has 4 divisors (see below), whose sum is σ = 91436208. Its totient is φ = 76196820.

The previous prime is 83816489. The next prime is 83816533. The reversal of 83816513 is 31561838.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 83816513 - 2⁶ = 83816449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83816533) 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, 3809831 + ... + 3809852.

It is an arithmetic number, because the mean of its divisors is an integer number (22859052).

Almost surely, 2^83816513 is an apocalyptic number.

It is an amenable number.

83816513 is a deficient number, since it is larger than the sum of its proper divisors (7619695).

83816513 is a wasteful number, since it uses less digits than its factorization.

83816513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7619694.

The product of its digits is 17280, while the sum is 35.

The square root of 83816513 is about 9155.1358810233. The cubic root of 83816513 is about 437.6327986522.

The spelling of 83816513 in words is "eighty-three million, eight hundred sixteen thousand, five hundred thirteen".