166467601 has 2 divisors, whose sum is σ = 166467602. Its totient is φ = 166467600.

The previous prime is 166467589. The next prime is 166467619. The reversal of 166467601 is 106764661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 159365376 + 7102225 = 12624^2 + 2665^2 .

It is an emirp because it is prime and its reverse (106764661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166467601 - 2¹³ = 166459409 is a prime.

It is a super-2 number, since 2×166467601² = 55422924365390402, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (166467661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83233800 + 83233801.

It is an arithmetic number, because the mean of its divisors is an integer number (83233801).

Almost surely, 2^166467601 is an apocalyptic number.

It is an amenable number.

166467601 is a deficient number, since it is larger than the sum of its proper divisors (1).

166467601 is an equidigital number, since it uses as much as digits as its factorization.

166467601 is an odious number, because the sum of its binary digits is odd.

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

The square root of 166467601 is about 12902.2324037354. The cubic root of 166467601 is about 550.1020207442.

The spelling of 166467601 in words is "one hundred sixty-six million, four hundred sixty-seven thousand, six hundred one".