82697947 has 2 divisors, whose sum is σ = 82697948. Its totient is φ = 82697946.

The previous prime is 82697941. The next prime is 82697969. The reversal of 82697947 is 74979628.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82697947 - 2³ = 82697939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 82697894 and 82697903.

It is not a weakly prime, because it can be changed into another prime (82697941) 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, 41348973 + 41348974.

It is an arithmetic number, because the mean of its divisors is an integer number (41348974).

Almost surely, 2^82697947 is an apocalyptic number.

82697947 is a deficient number, since it is larger than the sum of its proper divisors (1).

82697947 is an equidigital number, since it uses as much as digits as its factorization.

82697947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1524096, while the sum is 52.

The square root of 82697947 is about 9093.8411576187. The cubic root of 82697947 is about 435.6772767532.

The spelling of 82697947 in words is "eighty-two million, six hundred ninety-seven thousand, nine hundred forty-seven".