166498273 has 4 divisors (see below), whose sum is σ = 175261360. Its totient is φ = 157735188.

The previous prime is 166498271. The next prime is 166498301. The reversal of 166498273 is 372894661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 166498273 - 2¹ = 166498271 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166498271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4381515 + ... + 4381552.

It is an arithmetic number, because the mean of its divisors is an integer number (43815340).

Almost surely, 2^166498273 is an apocalyptic number.

It is an amenable number.

166498273 is a deficient number, since it is larger than the sum of its proper divisors (8763087).

166498273 is an equidigital number, since it uses as much as digits as its factorization.

166498273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8763086.

The product of its digits is 435456, while the sum is 46.

The square root of 166498273 is about 12903.4209804997. The cubic root of 166498273 is about 550.1358044813.

The spelling of 166498273 in words is "one hundred sixty-six million, four hundred ninety-eight thousand, two hundred seventy-three".