166704243 has 8 divisors (see below), whose sum is σ = 223603968. Its totient is φ = 110470344.

The previous prime is 166704217. The next prime is 166704259. The reversal of 166704243 is 342407661.

It is a happy number.

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

It is not a de Polignac number, because 166704243 - 2⁸ = 166703987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166754243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165871 + ... + 166872.

It is an arithmetic number, because the mean of its divisors is an integer number (27950496).

Almost surely, 2^166704243 is an apocalyptic number.

166704243 is a deficient number, since it is larger than the sum of its proper divisors (56899725).

166704243 is a wasteful number, since it uses less digits than its factorization.

166704243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332913.

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 166704243 is about 12911.3997304707. The cubic root of 166704243 is about 550.3625631476.

The spelling of 166704243 in words is "one hundred sixty-six million, seven hundred four thousand, two hundred forty-three".