83649 has 4 divisors (see below), whose sum is σ = 111536. Its totient is φ = 55764.

The previous prime is 83641. The next prime is 83653. The reversal of 83649 is 94638.

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 not a de Polignac number, because 83649 - 2³ = 83641 is a prime.

It is a D-number.

It is a Duffinian number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (83641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13939 + ... + 13944.

It is an arithmetic number, because the mean of its divisors is an integer number (27884).

2⁸³⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

83649 is a deficient number, since it is larger than the sum of its proper divisors (27887).

83649 is a wasteful number, since it uses less digits than its factorization.

83649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27886.

The product of its digits is 5184, while the sum is 30.

The square root of 83649 is about 289.2213685052. The cubic root of 83649 is about 43.7341057910.

It can be divided in two parts, 8 and 3649, that multiplied together give a palindrome (29192).

The spelling of 83649 in words is "eighty-three thousand, six hundred forty-nine".