166650067 has 4 divisors (see below), whose sum is σ = 166703040. Its totient is φ = 166597096.

The previous prime is 166650061. The next prime is 166650089. The reversal of 166650067 is 760056661.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 166650067 - 2¹¹ = 166648019 is a prime.

It is a super-2 number, since 2×166650067² = 55544489662208978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166650061) 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, 21448 + ... + 28165.

It is an arithmetic number, because the mean of its divisors is an integer number (41675760).

Almost surely, 2^166650067 is an apocalyptic number.

166650067 is a deficient number, since it is larger than the sum of its proper divisors (52973).

166650067 is an equidigital number, since it uses as much as digits as its factorization.

166650067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52972.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 166650067 is about 12909.3015690238. The cubic root of 166650067 is about 550.3029372453.

The spelling of 166650067 in words is "one hundred sixty-six million, six hundred fifty thousand, sixty-seven".