82697969 has 2 divisors, whose sum is σ = 82697970. Its totient is φ = 82697968.

The previous prime is 82697947. The next prime is 82697981. The reversal of 82697969 is 96979628.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74218225 + 8479744 = 8615^2 + 2912^2 .

It is a cyclic number.

It is not a de Polignac number, because 82697969 - 2¹² = 82693873 is a prime.

It is a super-3 number, since 3×82697969³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (82697939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41348984 + 41348985.

It is an arithmetic number, because the mean of its divisors is an integer number (41348985).

Almost surely, 2^82697969 is an apocalyptic number.

It is an amenable number.

82697969 is a deficient number, since it is larger than the sum of its proper divisors (1).

82697969 is an equidigital number, since it uses as much as digits as its factorization.

82697969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2939328, while the sum is 56.

The square root of 82697969 is about 9093.8423672285. The cubic root of 82697969 is about 435.6773153874.

The spelling of 82697969 in words is "eighty-two million, six hundred ninety-seven thousand, nine hundred sixty-nine".