82718477 has 2 divisors, whose sum is σ = 82718478. Its totient is φ = 82718476.

The previous prime is 82718473. The next prime is 82718507. The reversal of 82718477 is 77481728.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55145476 + 27573001 = 7426^2 + 5251^2 .

It is a cyclic number.

It is not a de Polignac number, because 82718477 - 2² = 82718473 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82718473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41359238 + 41359239.

It is an arithmetic number, because the mean of its divisors is an integer number (41359239).

Almost surely, 2^82718477 is an apocalyptic number.

It is an amenable number.

82718477 is a deficient number, since it is larger than the sum of its proper divisors (1).

82718477 is an equidigital number, since it uses as much as digits as its factorization.

82718477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 175616, while the sum is 44.

The square root of 82718477 is about 9094.9698735070. The cubic root of 82718477 is about 435.7133264769.

The spelling of 82718477 in words is "eighty-two million, seven hundred eighteen thousand, four hundred seventy-seven".