82630397 has 2 divisors, whose sum is σ = 82630398. Its totient is φ = 82630396.

The previous prime is 82630351. The next prime is 82630403. The reversal of 82630397 is 79303628.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48594841 + 34035556 = 6971^2 + 5834^2 .

It is a cyclic number.

It is not a de Polignac number, because 82630397 - 2²² = 78436093 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 82630397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82630307) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41315198 + 41315199.

It is an arithmetic number, because the mean of its divisors is an integer number (41315199).

Almost surely, 2^82630397 is an apocalyptic number.

It is an amenable number.

82630397 is a deficient number, since it is larger than the sum of its proper divisors (1).

82630397 is an equidigital number, since it uses as much as digits as its factorization.

82630397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 82630397 is about 9090.1263467567. The cubic root of 82630397 is about 435.5586199714.

The spelling of 82630397 in words is "eighty-two million, six hundred thirty thousand, three hundred ninety-seven".