83581385 has 8 divisors (see below), whose sum is σ = 100353600. Its totient is φ = 66827824.

The previous prime is 83581339. The next prime is 83581397. The reversal of 83581385 is 58318538.

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

It is a cyclic number.

It is not a de Polignac number, because 83581385 - 2¹⁰ = 83580361 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8666 + ... + 15564.

It is an arithmetic number, because the mean of its divisors is an integer number (12544200).

Almost surely, 2^83581385 is an apocalyptic number.

It is an amenable number.

83581385 is a deficient number, since it is larger than the sum of its proper divisors (16772215).

83581385 is a wasteful number, since it uses less digits than its factorization.

83581385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9327.

The product of its digits is 115200, while the sum is 41.

The square root of 83581385 is about 9142.2855457484. The cubic root of 83581385 is about 437.2231892497.

The spelling of 83581385 in words is "eighty-three million, five hundred eighty-one thousand, three hundred eighty-five".