166200007 has 4 divisors (see below), whose sum is σ = 175976496. Its totient is φ = 156423520.

The previous prime is 166199983. The next prime is 166200053. The reversal of 166200007 is 700002661.

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 166200007 - 2⁷ = 166199879 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 (166200077) 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, 4888219 + ... + 4888252.

It is an arithmetic number, because the mean of its divisors is an integer number (43994124).

Almost surely, 2^166200007 is an apocalyptic number.

166200007 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

166200007 is a deficient number, since it is larger than the sum of its proper divisors (9776489).

166200007 is an equidigital number, since it uses as much as digits as its factorization.

166200007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9776488.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 166200007 is about 12891.8581670758. The cubic root of 166200007 is about 549.8071026024.

Adding to 166200007 its reverse (700002661), we get a palindrome (866202668).

The spelling of 166200007 in words is "one hundred sixty-six million, two hundred thousand, seven".