66290167 has 4 divisors (see below), whose sum is σ = 66307360. Its totient is φ = 66272976.

The previous prime is 66290141. The next prime is 66290171. The reversal of 66290167 is 76109266.

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 66290167 - 2⁷ = 66290039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66290177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163 + ... + 11515.

It is an arithmetic number, because the mean of its divisors is an integer number (16576840).

Almost surely, 2^66290167 is an apocalyptic number.

66290167 is a deficient number, since it is larger than the sum of its proper divisors (17193).

66290167 is a wasteful number, since it uses less digits than its factorization.

66290167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17192.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 66290167 is about 8141.8773633604. The cubic root of 66290167 is about 404.7153758977.

The spelling of 66290167 in words is "sixty-six million, two hundred ninety thousand, one hundred sixty-seven".