83688285 has 16 divisors (see below), whose sum is σ = 134282880. Its totient is φ = 44506560.

The previous prime is 83688281. The next prime is 83688289. The reversal of 83688285 is 58288638.

It is an interprime number because it is at equal distance from previous prime (83688281) and next prime (83688289).

It is not a de Polignac number, because 83688285 - 2² = 83688281 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83688281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2386 + ... + 13155.

It is an arithmetic number, because the mean of its divisors is an integer number (8392680).

Almost surely, 2^83688285 is an apocalyptic number.

It is an amenable number.

83688285 is a deficient number, since it is larger than the sum of its proper divisors (50594595).

83688285 is a wasteful number, since it uses less digits than its factorization.

83688285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15908.

The product of its digits is 737280, while the sum is 48.

The square root of 83688285 is about 9148.1301368094. The cubic root of 83688285 is about 437.4095116257.

It can be divided in two parts, 8368 and 8285, that added together give a triangular number (16653 = T₁₈₂).

The spelling of 83688285 in words is "eighty-three million, six hundred eighty-eight thousand, two hundred eighty-five".