66834583 has 2 divisors, whose sum is σ = 66834584. Its totient is φ = 66834582.

The previous prime is 66834557. The next prime is 66834601. The reversal of 66834583 is 38543866.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66834583 is a prime.

It is a super-2 number, since 2×66834583² = 8933722969567778, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66834503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33417291 + 33417292.

It is an arithmetic number, because the mean of its divisors is an integer number (33417292).

Almost surely, 2^66834583 is an apocalyptic number.

66834583 is a deficient number, since it is larger than the sum of its proper divisors (1).

66834583 is an equidigital number, since it uses as much as digits as its factorization.

66834583 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 414720, while the sum is 43.

The square root of 66834583 is about 8175.2420759266. The cubic root of 66834583 is about 405.8202813015.

The spelling of 66834583 in words is "sixty-six million, eight hundred thirty-four thousand, five hundred eighty-three".