166958 has 8 divisors (see below), whose sum is σ = 273240. Its totient is φ = 75880.

The previous prime is 166949. The next prime is 166967. The reversal of 166958 is 859661.

It is an interprime number because it is at equal distance from previous prime (166949) and next prime (166967).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3773 + ... + 3816.

It is an arithmetic number, because the mean of its divisors is an integer number (34155).

2¹⁶⁶⁹⁵⁸ is an apocalyptic number.

166958 is a deficient number, since it is larger than the sum of its proper divisors (106282).

166958 is a wasteful number, since it uses less digits than its factorization.

166958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7602.

The product of its digits is 12960, while the sum is 35.

The square root of 166958 is about 408.6049436803. The cubic root of 166958 is about 55.0641675320.

The spelling of 166958 in words is "one hundred sixty-six thousand, nine hundred fifty-eight".