82697687 has 2 divisors, whose sum is σ = 82697688. Its totient is φ = 82697686.

The previous prime is 82697669. The next prime is 82697711. The reversal of 82697687 is 78679628.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82697687 - 2⁶ = 82697623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82697617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41348843 + 41348844.

It is an arithmetic number, because the mean of its divisors is an integer number (41348844).

Almost surely, 2^82697687 is an apocalyptic number.

82697687 is a deficient number, since it is larger than the sum of its proper divisors (1).

82697687 is an equidigital number, since it uses as much as digits as its factorization.

82697687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2032128, while the sum is 53.

The square root of 82697687 is about 9093.8268622181. The cubic root of 82697687 is about 435.6768201671.

The spelling of 82697687 in words is "eighty-two million, six hundred ninety-seven thousand, six hundred eighty-seven".