220166137 has 2 divisors, whose sum is σ = 220166138. Its totient is φ = 220166136.

The previous prime is 220166117. The next prime is 220166147. The reversal of 220166137 is 731661022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 166642281 + 53523856 = 12909^2 + 7316^2 .

It is a cyclic number.

It is not a de Polignac number, because 220166137 - 2¹¹ = 220164089 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (220166117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110083068 + 110083069.

It is an arithmetic number, because the mean of its divisors is an integer number (110083069).

Almost surely, 2^220166137 is an apocalyptic number.

It is an amenable number.

220166137 is a deficient number, since it is larger than the sum of its proper divisors (1).

220166137 is an equidigital number, since it uses as much as digits as its factorization.

220166137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 220166137 is about 14837.9963943923. The cubic root of 220166137 is about 603.8329956902.

The spelling of 220166137 in words is "two hundred twenty million, one hundred sixty-six thousand, one hundred thirty-seven".