166535396 has 6 divisors (see below), whose sum is σ = 291436950. Its totient is φ = 83267696.

The previous prime is 166535389. The next prime is 166535407. The reversal of 166535396 is 693535661.

It can be written as a sum of positive squares in only one way, i.e., 138062500 + 28472896 = 11750^2 + 5336^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20816921 + ... + 20816928.

It is an arithmetic number, because the mean of its divisors is an integer number (48572825).

Almost surely, 2^166535396 is an apocalyptic number.

It is an amenable number.

166535396 is a deficient number, since it is larger than the sum of its proper divisors (124901554).

166535396 is a wasteful number, since it uses less digits than its factorization.

166535396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41633853 (or 41633851 counting only the distinct ones).

The product of its digits is 437400, while the sum is 44.

The square root of 166535396 is about 12904.8593948171. The cubic root of 166535396 is about 550.1766881362.

The spelling of 166535396 in words is "one hundred sixty-six million, five hundred thirty-five thousand, three hundred ninety-six".