83679985 has 16 divisors (see below), whose sum is σ = 102326400. Its totient is φ = 65678976.

The previous prime is 83679949. The next prime is 83679997. The reversal of 83679985 is 58997638.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 83679985 - 2¹³ = 83671793 is a prime.

Its product of digits (3265920) is a multiple of the sum of its prime divisors (1080).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146781 + ... + 147349.

It is an arithmetic number, because the mean of its divisors is an integer number (6395400).

Almost surely, 2^83679985 is an apocalyptic number.

It is an amenable number.

83679985 is a deficient number, since it is larger than the sum of its proper divisors (18646415).

83679985 is a wasteful number, since it uses less digits than its factorization.

83679985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080.

The product of its digits is 3265920, while the sum is 55.

The square root of 83679985 is about 9147.6764809431. The cubic root of 83679985 is about 437.3950507447.

The spelling of 83679985 in words is "eighty-three million, six hundred seventy-nine thousand, nine hundred eighty-five".