166436 has 6 divisors (see below), whose sum is σ = 291270. Its totient is φ = 83216.

The previous prime is 166429. The next prime is 166457. The reversal of 166436 is 634661.

It can be written as a sum of positive squares in only one way, i.e., 164836 + 1600 = 406^2 + 40^2 .

It is an Ulam 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 166436.

It is an unprimeable number.

166436 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20801 + ... + 20808.

It is an arithmetic number, because the mean of its divisors is an integer number (48545).

2¹⁶⁶⁴³⁶ is an apocalyptic number.

It is an amenable number.

166436 is a deficient number, since it is larger than the sum of its proper divisors (124834).

166436 is a wasteful number, since it uses less digits than its factorization.

166436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41613 (or 41611 counting only the distinct ones).

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

The square root of 166436 is about 407.9656848315. The cubic root of 166436 is about 55.0067209418.

The spelling of 166436 in words is "one hundred sixty-six thousand, four hundred thirty-six".