66461167 has 2 divisors, whose sum is σ = 66461168. Its totient is φ = 66461166.

The previous prime is 66461137. The next prime is 66461189. The reversal of 66461167 is 76116466.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66461167 - 2¹¹ = 66459119 is a prime.

It is a super-3 number, since 3×66461167³ (a number of 24 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66461137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33230583 + 33230584.

It is an arithmetic number, because the mean of its divisors is an integer number (33230584).

Almost surely, 2^66461167 is an apocalyptic number.

66461167 is a deficient number, since it is larger than the sum of its proper divisors (1).

66461167 is an equidigital number, since it uses as much as digits as its factorization.

66461167 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 37.

The square root of 66461167 is about 8152.3718634518. The cubic root of 66461167 is about 405.0630740559.

The spelling of 66461167 in words is "sixty-six million, four hundred sixty-one thousand, one hundred sixty-seven".