66057067 has 2 divisors, whose sum is σ = 66057068. Its totient is φ = 66057066.

The previous prime is 66057031. The next prime is 66057113. The reversal of 66057067 is 76075066.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66057067 - 2¹¹ = 66055019 is a prime.

It is a super-2 number, since 2×66057067² = 8727072201284978, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (66057367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33028533 + 33028534.

It is an arithmetic number, because the mean of its divisors is an integer number (33028534).

Almost surely, 2^66057067 is an apocalyptic number.

66057067 is a deficient number, since it is larger than the sum of its proper divisors (1).

66057067 is an equidigital number, since it uses as much as digits as its factorization.

66057067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52920, while the sum is 37.

The square root of 66057067 is about 8127.5498768079. The cubic root of 66057067 is about 404.2404439850.

The spelling of 66057067 in words is "sixty-six million, fifty-seven thousand, sixty-seven".