66022141 has 2 divisors, whose sum is σ = 66022142. Its totient is φ = 66022140.

The previous prime is 66022133. The next prime is 66022193. The reversal of 66022141 is 14122066.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61308900 + 4713241 = 7830^2 + 2171^2 .

It is a cyclic number.

It is not a de Polignac number, because 66022141 - 2³ = 66022133 is a prime.

It is a super-4 number, since 4×66022141⁴ (a number of 32 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66022741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33011070 + 33011071.

It is an arithmetic number, because the mean of its divisors is an integer number (33011071).

Almost surely, 2^66022141 is an apocalyptic number.

It is an amenable number.

66022141 is a deficient number, since it is larger than the sum of its proper divisors (1).

66022141 is an equidigital number, since it uses as much as digits as its factorization.

66022141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 66022141 is about 8125.4009747212. The cubic root of 66022141 is about 404.1691874620.

It can be divided in two parts, 660 and 22141, that added together give a square (22801 = 151²).

The spelling of 66022141 in words is "sixty-six million, twenty-two thousand, one hundred forty-one".