83688877 has 4 divisors (see below), whose sum is σ = 84190176. Its totient is φ = 83187580.

The previous prime is 83688851. The next prime is 83688883. The reversal of 83688877 is 77888638.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83688877 is a prime.

It is a super-2 number, since 2×83688877² = 14007656267042258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83688827) 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 3 ways as a sum of consecutive naturals, for example, 250399 + ... + 250732.

It is an arithmetic number, because the mean of its divisors is an integer number (21047544).

Almost surely, 2^83688877 is an apocalyptic number.

It is an amenable number.

83688877 is a deficient number, since it is larger than the sum of its proper divisors (501299).

83688877 is a wasteful number, since it uses less digits than its factorization.

83688877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501298.

The product of its digits is 3612672, while the sum is 55.

The square root of 83688877 is about 9148.1624930912. The cubic root of 83688877 is about 437.4105430158.

The spelling of 83688877 in words is "eighty-three million, six hundred eighty-eight thousand, eight hundred seventy-seven".