83688534 has 24 divisors (see below), whose sum is σ = 181852632. Its totient is φ = 27815040.

The previous prime is 83688533. The next prime is 83688551. The reversal of 83688534 is 43588638.

83688534 is a `hidden beast` number, since 8 + 36 + 88 + 534 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 83688534.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83688533) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 232 + ... + 12939.

It is an arithmetic number, because the mean of its divisors is an integer number (7577193).

Almost surely, 2^83688534 is an apocalyptic number.

83688534 is an abundant number, since it is smaller than the sum of its proper divisors (98164098).

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

83688534 is a wasteful number, since it uses less digits than its factorization.

83688534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13532 (or 13529 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The square root of 83688534 is about 9148.1437461378. The cubic root of 83688534 is about 437.4099454373.

The spelling of 83688534 in words is "eighty-three million, six hundred eighty-eight thousand, five hundred thirty-four".