83398566 has 32 divisors (see below), whose sum is σ = 178754688. Its totient is φ = 25846400.

The previous prime is 83398561. The next prime is 83398589. The reversal of 83398566 is 66589338.

83398566 is nontrivially palindromic in base 5.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83398561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3541 + ... + 13391.

It is an arithmetic number, because the mean of its divisors is an integer number (5586084).

Almost surely, 2^83398566 is an apocalyptic number.

83398566 is an abundant number, since it is smaller than the sum of its proper divisors (95356122).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

83398566 is a wasteful number, since it uses less digits than its factorization.

83398566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9956.

The product of its digits is 933120, while the sum is 48.

The square root of 83398566 is about 9132.2815331110. The cubic root of 83398566 is about 436.9041746088.

It can be divided in two parts, 833 and 98566, that added together give a palindrome (99399).

The spelling of 83398566 in words is "eighty-three million, three hundred ninety-eight thousand, five hundred sixty-six".