82221967 has 2 divisors, whose sum is σ = 82221968. Its totient is φ = 82221966.

The previous prime is 82221947. The next prime is 82221973. The reversal of 82221967 is 76912228.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82221967 - 2¹¹ = 82219919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82221907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41110983 + 41110984.

It is an arithmetic number, because the mean of its divisors is an integer number (41110984).

Almost surely, 2^82221967 is an apocalyptic number.

82221967 is a deficient number, since it is larger than the sum of its proper divisors (1).

82221967 is an equidigital number, since it uses as much as digits as its factorization.

82221967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 37.

The square root of 82221967 is about 9067.6329325795. The cubic root of 82221967 is about 434.8398000838.

The spelling of 82221967 in words is "eighty-two million, two hundred twenty-one thousand, nine hundred sixty-seven".