82980197 has 2 divisors, whose sum is σ = 82980198. Its totient is φ = 82980196.

The previous prime is 82980193. The next prime is 82980221. The reversal of 82980197 is 79108928.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79103236 + 3876961 = 8894^2 + 1969^2 .

It is a cyclic number.

It is not a de Polignac number, because 82980197 - 2² = 82980193 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82980193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41490098 + 41490099.

It is an arithmetic number, because the mean of its divisors is an integer number (41490099).

Almost surely, 2^82980197 is an apocalyptic number.

It is an amenable number.

82980197 is a deficient number, since it is larger than the sum of its proper divisors (1).

82980197 is an equidigital number, since it uses as much as digits as its factorization.

82980197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 44.

The square root of 82980197 is about 9109.3466834894. The cubic root of 82980197 is about 436.1723727855.

The spelling of 82980197 in words is "eighty-two million, nine hundred eighty thousand, one hundred ninety-seven".