82649 has 4 divisors (see below), whose sum is σ = 94464. Its totient is φ = 70836.

The previous prime is 82633. The next prime is 82651. The reversal of 82649 is 94628.

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 not a de Polignac number, because 82649 - 2⁴ = 82633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5897 + ... + 5910.

It is an arithmetic number, because the mean of its divisors is an integer number (23616).

2⁸²⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

82649 is a deficient number, since it is larger than the sum of its proper divisors (11815).

82649 is a wasteful number, since it uses less digits than its factorization.

82649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11814.

The product of its digits is 3456, while the sum is 29.

The square root of 82649 is about 287.4873910279. The cubic root of 82649 is about 43.5591304025.

The spelling of 82649 in words is "eighty-two thousand, six hundred forty-nine".