83135669 has 4 divisors (see below), whose sum is σ = 83616396. Its totient is φ = 82654944.

The previous prime is 83135609. The next prime is 83135681. The reversal of 83135669 is 96653138.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96653138 = 2 ⋅48326569.

It can be written as a sum of positive squares in 2 ways, for example, as 52388644 + 30747025 = 7238^2 + 5545^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83135669 is a prime.

It is a super-2 number, since 2×83135669² = 13823078920155122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83135609) 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, 240104 + ... + 240449.

It is an arithmetic number, because the mean of its divisors is an integer number (20904099).

Almost surely, 2^83135669 is an apocalyptic number.

It is an amenable number.

83135669 is a deficient number, since it is larger than the sum of its proper divisors (480727).

83135669 is a wasteful number, since it uses less digits than its factorization.

83135669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480726.

The product of its digits is 116640, while the sum is 41.

The square root of 83135669 is about 9117.8763426579. The cubic root of 83135669 is about 436.4446075528. Note that the first 3 decimals are identical.

The spelling of 83135669 in words is "eighty-three million, one hundred thirty-five thousand, six hundred sixty-nine".