166012061 has 2 divisors, whose sum is σ = 166012062. Its totient is φ = 166012060.

The previous prime is 166012051. The next prime is 166012069. The reversal of 166012061 is 160210661.

166012061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 163686436 + 2325625 = 12794^2 + 1525^2 .

It is a cyclic number.

It is not a de Polignac number, because 166012061 - 2¹⁴ = 165995677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166012069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83006030 + 83006031.

It is an arithmetic number, because the mean of its divisors is an integer number (83006031).

Almost surely, 2^166012061 is an apocalyptic number.

It is an amenable number.

166012061 is a deficient number, since it is larger than the sum of its proper divisors (1).

166012061 is an equidigital number, since it uses as much as digits as its factorization.

166012061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 166012061 is about 12884.5667757981. The cubic root of 166012061 is about 549.5997760534.

The spelling of 166012061 in words is "one hundred sixty-six million, twelve thousand, sixty-one".