82591633 has 2 divisors, whose sum is σ = 82591634. Its totient is φ = 82591632.

The previous prime is 82591631. The next prime is 82591679. The reversal of 82591633 is 33619528.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51365889 + 31225744 = 7167^2 + 5588^2 .

It is a cyclic number.

It is not a de Polignac number, because 82591633 - 2¹ = 82591631 is a prime.

Together with 82591631, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 82591592 and 82591601.

It is not a weakly prime, because it can be changed into another prime (82591631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41295816 + 41295817.

It is an arithmetic number, because the mean of its divisors is an integer number (41295817).

Almost surely, 2^82591633 is an apocalyptic number.

It is an amenable number.

82591633 is a deficient number, since it is larger than the sum of its proper divisors (1).

82591633 is an equidigital number, since it uses as much as digits as its factorization.

82591633 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 37.

The square root of 82591633 is about 9087.9938930437. The cubic root of 82591633 is about 435.4904988122.

The spelling of 82591633 in words is "eighty-two million, five hundred ninety-one thousand, six hundred thirty-three".