83716865 has 4 divisors (see below), whose sum is σ = 100460244. Its totient is φ = 66973488.

The previous prime is 83716859. The next prime is 83716877. The reversal of 83716865 is 56861738.

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 24611521 + 59105344 = 4961^2 + 7688^2 .

It is a cyclic number.

It is not a de Polignac number, because 83716865 - 2⁸ = 83716609 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8371682 + ... + 8371691.

It is an arithmetic number, because the mean of its divisors is an integer number (25115061).

Almost surely, 2^83716865 is an apocalyptic number.

It is an amenable number.

83716865 is a deficient number, since it is larger than the sum of its proper divisors (16743379).

83716865 is a wasteful number, since it uses less digits than its factorization.

83716865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16743378.

The product of its digits is 241920, while the sum is 44.

The square root of 83716865 is about 9149.6920713213. The cubic root of 83716865 is about 437.4592985265.

The spelling of 83716865 in words is "eighty-three million, seven hundred sixteen thousand, eight hundred sixty-five".