82560397 has 2 divisors, whose sum is σ = 82560398. Its totient is φ = 82560396.

The previous prime is 82560353. The next prime is 82560403. The reversal of 82560397 is 79306528.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80802121 + 1758276 = 8989^2 + 1326^2 .

It is a cyclic number.

It is not a de Polignac number, because 82560397 - 2²³ = 74171789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82560097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41280198 + 41280199.

It is an arithmetic number, because the mean of its divisors is an integer number (41280199).

Almost surely, 2^82560397 is an apocalyptic number.

It is an amenable number.

82560397 is a deficient number, since it is larger than the sum of its proper divisors (1).

82560397 is an equidigital number, since it uses as much as digits as its factorization.

82560397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 82560397 is about 9086.2751994423. The cubic root of 82560397 is about 435.4355913276.

The spelling of 82560397 in words is "eighty-two million, five hundred sixty thousand, three hundred ninety-seven".