82170653 has 2 divisors, whose sum is σ = 82170654. Its totient is φ = 82170652.

The previous prime is 82170589. The next prime is 82170661. The reversal of 82170653 is 35607128.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57350329 + 24820324 = 7573^2 + 4982^2 .

It is a cyclic number.

It is not a de Polignac number, because 82170653 - 2⁶ = 82170589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82179653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41085326 + 41085327.

It is an arithmetic number, because the mean of its divisors is an integer number (41085327).

Almost surely, 2^82170653 is an apocalyptic number.

It is an amenable number.

82170653 is a deficient number, since it is larger than the sum of its proper divisors (1).

82170653 is an equidigital number, since it uses as much as digits as its factorization.

82170653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 82170653 is about 9064.8029763476. The cubic root of 82170653 is about 434.7493213720.

The spelling of 82170653 in words is "eighty-two million, one hundred seventy thousand, six hundred fifty-three".