101660173 has 4 divisors (see below), whose sum is σ = 101895388. Its totient is φ = 101424960.

The previous prime is 101660149. The next prime is 101660177. The reversal of 101660173 is 371066101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13638249 + 88021924 = 3693^2 + 9382^2 .

It is a cyclic number.

It is not a de Polignac number, because 101660173 - 2¹⁷ = 101529101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101660177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116958 + ... + 117823.

It is an arithmetic number, because the mean of its divisors is an integer number (25473847).

Almost surely, 2^101660173 is an apocalyptic number.

It is an amenable number.

101660173 is a deficient number, since it is larger than the sum of its proper divisors (235215).

101660173 is an equidigital number, since it uses as much as digits as its factorization.

101660173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235214.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 101660173 is about 10082.6669586970. Note that the first 3 decimals coincide. The cubic root of 101660173 is about 466.7134120408.

The spelling of 101660173 in words is "one hundred one million, six hundred sixty thousand, one hundred seventy-three".