83591693 has 2 divisors, whose sum is σ = 83591694. Its totient is φ = 83591692.

The previous prime is 83591671. The next prime is 83591701. The reversal of 83591693 is 39619538.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57805609 + 25786084 = 7603^2 + 5078^2 .

It is a cyclic number.

It is not a de Polignac number, because 83591693 - 2¹² = 83587597 is a prime.

It is a super-2 number, since 2×83591693² = 13975142277212498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83591623) 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, 41795846 + 41795847.

It is an arithmetic number, because the mean of its divisors is an integer number (41795847).

Almost surely, 2^83591693 is an apocalyptic number.

It is an amenable number.

83591693 is a deficient number, since it is larger than the sum of its proper divisors (1).

83591693 is an equidigital number, since it uses as much as digits as its factorization.

83591693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 174960, while the sum is 44.

The square root of 83591693 is about 9142.8492823627. The cubic root of 83591693 is about 437.2411625953.

The spelling of 83591693 in words is "eighty-three million, five hundred ninety-one thousand, six hundred ninety-three".