166634 has 24 divisors (see below), whose sum is σ = 296460. Its totient is φ = 69888.

The previous prime is 166631. The next prime is 166643. The reversal of 166634 is 436661.

166634 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 46225 + 120409 = 215^2 + 347^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a d-powerful number, because it can be written as 1 + 6⁵ + 6⁶ + 6⁶ + 3² + 4⁸ .

It is a Curzon number.

It is a plaindrome in base 15.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 166634.

It is not an unprimeable number, because it can be changed into a prime (166631) 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, 5732 + ... + 5760.

2¹⁶⁶⁶³⁴ is an apocalyptic number.

166634 is a deficient number, since it is larger than the sum of its proper divisors (129826).

166634 is a wasteful number, since it uses less digits than its factorization.

166634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74 (or 61 counting only the distinct ones).

The product of its digits is 2592, while the sum is 26.

The square root of 166634 is about 408.2082801708. The cubic root of 166634 is about 55.0285251481.

It can be divided in two parts, 1666 and 34, that multiplied together give a square (56644 = 238²).

The spelling of 166634 in words is "one hundred sixty-six thousand, six hundred thirty-four".