166267473 has 4 divisors (see below), whose sum is σ = 221689968. Its totient is φ = 110844980.

The previous prime is 166267457. The next prime is 166267481. The reversal of 166267473 is 374762661.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 166267473 - 2⁴ = 166267457 is a prime.

It is a super-3 number, since 3×166267473³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (166267373) 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, 27711243 + ... + 27711248.

It is an arithmetic number, because the mean of its divisors is an integer number (55422492).

Almost surely, 2^166267473 is an apocalyptic number.

It is an amenable number.

166267473 is a deficient number, since it is larger than the sum of its proper divisors (55422495).

166267473 is an equidigital number, since it uses as much as digits as its factorization.

166267473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55422494.

The product of its digits is 254016, while the sum is 42.

The square root of 166267473 is about 12894.4745143026. The cubic root of 166267473 is about 549.8814874127.

The spelling of 166267473 in words is "one hundred sixty-six million, two hundred sixty-seven thousand, four hundred seventy-three".