166100061 has 16 divisors (see below), whose sum is σ = 227259648. Its totient is φ = 107846400.

The previous prime is 166100041. The next prime is 166100063. The reversal of 166100061 is 160001661.

It is not a de Polignac number, because 166100061 - 2⁵ = 166100029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166100063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134316 + ... + 135546.

It is an arithmetic number, because the mean of its divisors is an integer number (14203728).

Almost surely, 2^166100061 is an apocalyptic number.

It is an amenable number.

166100061 is a deficient number, since it is larger than the sum of its proper divisors (61159587).

166100061 is a wasteful number, since it uses less digits than its factorization.

166100061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2372.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 166100061 is about 12887.9812616251. The cubic root of 166100061 is about 549.6968698764.

The spelling of 166100061 in words is "one hundred sixty-six million, one hundred thousand, sixty-one".