166512007 has 4 divisors (see below), whose sum is σ = 166545360. Its totient is φ = 166478656.

The previous prime is 166512001. The next prime is 166512011. The reversal of 166512007 is 700215661.

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 166512007 - 2³ = 166511999 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 (166512001) 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, 7507 + ... + 19732.

It is an arithmetic number, because the mean of its divisors is an integer number (41636340).

Almost surely, 2^166512007 is an apocalyptic number.

166512007 is a deficient number, since it is larger than the sum of its proper divisors (33353).

166512007 is an equidigital number, since it uses as much as digits as its factorization.

166512007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33352.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 166512007 is about 12903.9531539757. The cubic root of 166512007 is about 550.1509304788.

Adding to 166512007 its reverse (700215661), we get a palindrome (866727668).

The spelling of 166512007 in words is "one hundred sixty-six million, five hundred twelve thousand, seven".