82663647 has 32 divisors (see below), whose sum is σ = 123863040. Its totient is φ = 48609120.

The previous prime is 82663631. The next prime is 82663697. The reversal of 82663647 is 74636628.

It is not a de Polignac number, because 82663647 - 2⁴ = 82663631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 82663599 and 82663608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82663627) 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 31 ways as a sum of consecutive naturals, for example, 345754 + ... + 345992.

It is an arithmetic number, because the mean of its divisors is an integer number (3870720).

Almost surely, 2^82663647 is an apocalyptic number.

82663647 is a deficient number, since it is larger than the sum of its proper divisors (41199393).

82663647 is a wasteful number, since it uses less digits than its factorization.

82663647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523.

The product of its digits is 290304, while the sum is 42.

The square root of 82663647 is about 9091.9550702805. The cubic root of 82663647 is about 435.6170342375.

The spelling of 82663647 in words is "eighty-two million, six hundred sixty-three thousand, six hundred forty-seven".