83824081 has 6 divisors (see below), whose sum is σ = 92137346. Its totient is φ = 76203600.

The previous prime is 83824079. The next prime is 83824087. The reversal of 83824081 is 18042838.

It can be written as a sum of positive squares in only one way, i.e., 66259600 + 17564481 = 8140^2 + 4191^2 .

It is not a de Polignac number, because 83824081 - 2¹ = 83824079 is a prime.

It is a super-2 number, since 2×83824081² = 14052953110989122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83824087) 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, 346260 + ... + 346501.

Almost surely, 2^83824081 is an apocalyptic number.

It is an amenable number.

83824081 is a deficient number, since it is larger than the sum of its proper divisors (8313265).

83824081 is a wasteful number, since it uses less digits than its factorization.

83824081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692783 (or 692772 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 34.

The square root of 83824081 is about 9155.5491916105. The cubic root of 83824081 is about 437.6459699046.

The spelling of 83824081 in words is "eighty-three million, eight hundred twenty-four thousand, eighty-one".