166709455 has 12 divisors (see below), whose sum is σ = 218363256. Its totient is φ = 121173600.

The previous prime is 166709453. The next prime is 166709461. The reversal of 166709455 is 554907661.

It is not a de Polignac number, because 166709455 - 2¹ = 166709453 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 (166709453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94885 + ... + 96625.

It is an arithmetic number, because the mean of its divisors is an integer number (18196938).

Almost surely, 2^166709455 is an apocalyptic number.

166709455 is a deficient number, since it is larger than the sum of its proper divisors (51653801).

166709455 is an frugal number, since it uses more digits than its factorization.

166709455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3498 (or 1757 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 43.

The square root of 166709455 is about 12911.6015660335. The cubic root of 166709455 is about 550.3682987741.

The spelling of 166709455 in words is "one hundred sixty-six million, seven hundred nine thousand, four hundred fifty-five".