84321697 has 2 divisors, whose sum is σ = 84321698. Its totient is φ = 84321696.

The previous prime is 84321689. The next prime is 84321701. The reversal of 84321697 is 79612348.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52070656 + 32251041 = 7216^2 + 5679^2 .

It is a cyclic number.

It is not a de Polignac number, because 84321697 - 2³ = 84321689 is a prime.

It is a super-2 number, since 2×84321697² = 14220297169919618, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (84321607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42160848 + 42160849.

It is an arithmetic number, because the mean of its divisors is an integer number (42160849).

Almost surely, 2^84321697 is an apocalyptic number.

It is an amenable number.

84321697 is a deficient number, since it is larger than the sum of its proper divisors (1).

84321697 is an equidigital number, since it uses as much as digits as its factorization.

84321697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 40.

The square root of 84321697 is about 9182.6846292356. The cubic root of 84321697 is about 438.5102804358.

The spelling of 84321697 in words is "eighty-four million, three hundred twenty-one thousand, six hundred ninety-seven".