66027131 has 2 divisors, whose sum is σ = 66027132. Its totient is φ = 66027130.

The previous prime is 66027121. The next prime is 66027139. The reversal of 66027131 is 13172066.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66027131 - 2⁶ = 66027067 is a prime.

It is a super-2 number, since 2×66027131² = 8719164056182322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66027131.

It is not a weakly prime, because it can be changed into another prime (66027139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33013565 + 33013566.

It is an arithmetic number, because the mean of its divisors is an integer number (33013566).

Almost surely, 2^66027131 is an apocalyptic number.

66027131 is a deficient number, since it is larger than the sum of its proper divisors (1).

66027131 is an equidigital number, since it uses as much as digits as its factorization.

66027131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 66027131 is about 8125.7080306888. The cubic root of 66027131 is about 404.1793696696.

Adding to 66027131 its reverse (13172066), we get a palindrome (79199197).

The spelling of 66027131 in words is "sixty-six million, twenty-seven thousand, one hundred thirty-one".