82391677 has 2 divisors, whose sum is σ = 82391678. Its totient is φ = 82391676.

The previous prime is 82391651. The next prime is 82391689. The reversal of 82391677 is 77619328.

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., 45010681 + 37380996 = 6709^2 + 6114^2 .

It is a cyclic number.

It is not a de Polignac number, because 82391677 - 2¹⁹ = 81867389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82397677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41195838 + 41195839.

It is an arithmetic number, because the mean of its divisors is an integer number (41195839).

Almost surely, 2^82391677 is an apocalyptic number.

It is an amenable number.

82391677 is a deficient number, since it is larger than the sum of its proper divisors (1).

82391677 is an equidigital number, since it uses as much as digits as its factorization.

82391677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 43.

The square root of 82391677 is about 9076.9861187511. The cubic root of 82391677 is about 435.1387710687.

The spelling of 82391677 in words is "eighty-two million, three hundred ninety-one thousand, six hundred seventy-seven".