82555687 has 2 divisors, whose sum is σ = 82555688. Its totient is φ = 82555686.

The previous prime is 82555661. The next prime is 82555699. The reversal of 82555687 is 78655528.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82555687 - 2⁷ = 82555559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82555087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41277843 + 41277844.

It is an arithmetic number, because the mean of its divisors is an integer number (41277844).

Almost surely, 2^82555687 is an apocalyptic number.

82555687 is a deficient number, since it is larger than the sum of its proper divisors (1).

82555687 is an equidigital number, since it uses as much as digits as its factorization.

82555687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 672000, while the sum is 46.

The square root of 82555687 is about 9086.0160136333. The cubic root of 82555687 is about 435.4273107609.

The spelling of 82555687 in words is "eighty-two million, five hundred fifty-five thousand, six hundred eighty-seven".