83641697 has 2 divisors, whose sum is σ = 83641698. Its totient is φ = 83641696.

The previous prime is 83641693. The next prime is 83641703. The reversal of 83641697 is 79614638.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71081761 + 12559936 = 8431^2 + 3544^2 .

It is a cyclic number.

It is not a de Polignac number, because 83641697 - 2² = 83641693 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (83641693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41820848 + 41820849.

It is an arithmetic number, because the mean of its divisors is an integer number (41820849).

Almost surely, 2^83641697 is an apocalyptic number.

It is an amenable number.

83641697 is a deficient number, since it is larger than the sum of its proper divisors (1).

83641697 is an equidigital number, since it uses as much as digits as its factorization.

83641697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 44.

The square root of 83641697 is about 9145.5834696317. The cubic root of 83641697 is about 437.3283301442.

The spelling of 83641697 in words is "eighty-three million, six hundred forty-one thousand, six hundred ninety-seven".