166072 has 8 divisors (see below), whose sum is σ = 311400. Its totient is φ = 83032.

The previous prime is 166063. The next prime is 166081. The reversal of 166072 is 270661.

166072 is nontrivially palindromic in base 14.

It is an interprime number because it is at equal distance from previous prime (166063) and next prime (166081).

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10372 + ... + 10387.

It is an arithmetic number, because the mean of its divisors is an integer number (38925).

2¹⁶⁶⁰⁷² is an apocalyptic number.

It is an amenable number.

166072 is a deficient number, since it is larger than the sum of its proper divisors (145328).

166072 is a wasteful number, since it uses less digits than its factorization.

166072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20765 (or 20761 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 166072 is about 407.5193246952. The cubic root of 166072 is about 54.9665912809.

The spelling of 166072 in words is "one hundred sixty-six thousand, seventy-two".