166915 has 16 divisors (see below), whose sum is σ = 241920. Its totient is φ = 108000.

The previous prime is 166909. The next prime is 166919. The reversal of 166915 is 519661.

It is not a de Polignac number, because 166915 - 2⁹ = 166403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 540 + ... + 790.

It is an arithmetic number, because the mean of its divisors is an integer number (15120).

2¹⁶⁶⁹¹⁵ is an apocalyptic number.

166915 is a deficient number, since it is larger than the sum of its proper divisors (75005).

166915 is a wasteful number, since it uses less digits than its factorization.

166915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282.

The product of its digits is 1620, while the sum is 28.

The square root of 166915 is about 408.5523222306. The cubic root of 166915 is about 55.0594398709.

It can be divided in two parts, 166 and 915, that added together give a triangular number (1081 = T₄₆).

The spelling of 166915 in words is "one hundred sixty-six thousand, nine hundred fifteen".