83399685 has 8 divisors (see below), whose sum is σ = 133439520. Its totient is φ = 44479824.

The previous prime is 83399681. The next prime is 83399707. The reversal of 83399685 is 58699338.

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

It is not a de Polignac number, because 83399685 - 2² = 83399681 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83399681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2779975 + ... + 2780004.

It is an arithmetic number, because the mean of its divisors is an integer number (16679940).

Almost surely, 2^83399685 is an apocalyptic number.

It is an amenable number.

83399685 is a deficient number, since it is larger than the sum of its proper divisors (50039835).

83399685 is a wasteful number, since it uses less digits than its factorization.

83399685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5559987.

The product of its digits is 1399680, while the sum is 51.

The square root of 83399685 is about 9132.3427990850. The cubic root of 83399685 is about 436.9061286535.

The spelling of 83399685 in words is "eighty-three million, three hundred ninety-nine thousand, six hundred eighty-five".