83299772689 has 9 divisors (see below), whose sum is σ = 96902085801. Its totient is φ = 71398073460.

The previous prime is 83299772641. The next prime is 83299772701. The reversal of 83299772689 is 98627799238.

The square root of 83299772689 is 288617.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 83299772689 - 2¹⁵ = 83299739921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83299772639) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1999704 + ... + 2040934.

Almost surely, 2^83299772689 is an apocalyptic number.

83299772689 is the 288617-th square number.

83299772689 is the 144309-th centered octagonal number.

It is an amenable number.

83299772689 is a deficient number, since it is larger than the sum of its proper divisors (13602313112).

83299772689 is an frugal number, since it uses more digits than its factorization.

83299772689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82476 (or 41238 counting only the distinct ones).

The product of its digits is 164602368, while the sum is 70.

The spelling of 83299772689 in words is "eighty-three billion, two hundred ninety-nine million, seven hundred seventy-two thousand, six hundred eighty-nine".