66022057 has 2 divisors, whose sum is σ = 66022058. Its totient is φ = 66022056.

The previous prime is 66022051. The next prime is 66022079. The reversal of 66022057 is 75022066.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49829481 + 16192576 = 7059^2 + 4024^2 .

It is a cyclic number.

It is not a de Polignac number, because 66022057 - 2²³ = 57633449 is a prime.

It is a super-2 number, since 2×66022057² = 8717824021022498, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (66022051) 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, 33011028 + 33011029.

It is an arithmetic number, because the mean of its divisors is an integer number (33011029).

Almost surely, 2^66022057 is an apocalyptic number.

It is an amenable number.

66022057 is a deficient number, since it is larger than the sum of its proper divisors (1).

66022057 is an equidigital number, since it uses as much as digits as its factorization.

66022057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 66022057 is about 8125.3958057439. The cubic root of 66022057 is about 404.1690160537.

Subtracting 66022057 from its reverse (75022066), we obtain a palindrome (9000009).

The spelling of 66022057 in words is "sixty-six million, twenty-two thousand, fifty-seven".