82000649 has 4 divisors (see below), whose sum is σ = 82032336. Its totient is φ = 81968964.

The previous prime is 82000643. The next prime is 82000663. The reversal of 82000649 is 94600028.

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 82000649 - 2⁸ = 82000393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82000643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11579 + ... + 17264.

It is an arithmetic number, because the mean of its divisors is an integer number (20508084).

Almost surely, 2^82000649 is an apocalyptic number.

It is an amenable number.

82000649 is a deficient number, since it is larger than the sum of its proper divisors (31687).

82000649 is a wasteful number, since it uses less digits than its factorization.

82000649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31686.

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

The square root of 82000649 is about 9055.4209730967. The cubic root of 82000649 is about 434.4492947399.

The spelling of 82000649 in words is "eighty-two million, six hundred forty-nine", and thus it is an aban number.