166022611 has 2 divisors, whose sum is σ = 166022612. Its totient is φ = 166022610.

The previous prime is 166022569. The next prime is 166022617. The reversal of 166022611 is 116220661.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166022611 is a prime.

It is not a weakly prime, because it can be changed into another prime (166022617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83011305 + 83011306.

It is an arithmetic number, because the mean of its divisors is an integer number (83011306).

Almost surely, 2^166022611 is an apocalyptic number.

166022611 is a deficient number, since it is larger than the sum of its proper divisors (1).

166022611 is an equidigital number, since it uses as much as digits as its factorization.

166022611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 166022611 is about 12884.9761738235. The cubic root of 166022611 is about 549.6114180886.

The spelling of 166022611 in words is "one hundred sixty-six million, twenty-two thousand, six hundred eleven".