83565381 has 8 divisors (see below), whose sum is σ = 111574240. Its totient is φ = 55633392.

The previous prime is 83565359. The next prime is 83565407. The reversal of 83565381 is 18356538.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 83565381 - 2¹⁰ = 83564357 is a prime.

It is a super-2 number, since 2×83565381² = 13966345803350322, 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 (83565301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16630 + ... + 21063.

It is an arithmetic number, because the mean of its divisors is an integer number (13946780).

Almost surely, 2^83565381 is an apocalyptic number.

It is an amenable number.

83565381 is a deficient number, since it is larger than the sum of its proper divisors (28008859).

83565381 is a wasteful number, since it uses less digits than its factorization.

83565381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38435.

The product of its digits is 86400, while the sum is 39.

The square root of 83565381 is about 9141.4102303747. The cubic root of 83565381 is about 437.1952812548.

The spelling of 83565381 in words is "eighty-three million, five hundred sixty-five thousand, three hundred eighty-one".