82676509 has 2 divisors, whose sum is σ = 82676510. Its totient is φ = 82676508.

The previous prime is 82676501. The next prime is 82676579. The reversal of 82676509 is 90567628.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58568409 + 24108100 = 7653^2 + 4910^2 .

It is a cyclic number.

It is not a de Polignac number, because 82676509 - 2³ = 82676501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82676501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41338254 + 41338255.

It is an arithmetic number, because the mean of its divisors is an integer number (41338255).

Almost surely, 2^82676509 is an apocalyptic number.

It is an amenable number.

82676509 is a deficient number, since it is larger than the sum of its proper divisors (1).

82676509 is an equidigital number, since it uses as much as digits as its factorization.

82676509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 82676509 is about 9092.6623713850. The cubic root of 82676509 is about 435.6396262552.

The spelling of 82676509 in words is "eighty-two million, six hundred seventy-six thousand, five hundred nine".