166205007 has 16 divisors (see below), whose sum is σ = 246432000. Its totient is φ = 110712312.

The previous prime is 166204993. The next prime is 166205009. The reversal of 166205007 is 700502661.

166205007 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 166205007 - 2⁴ = 166204991 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166205009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53544 + ... + 56562.

It is an arithmetic number, because the mean of its divisors is an integer number (15402000).

Almost surely, 2^166205007 is an apocalyptic number.

166205007 is a deficient number, since it is larger than the sum of its proper divisors (80226993).

166205007 is a wasteful number, since it uses less digits than its factorization.

166205007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5067 (or 5061 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 166205007 is about 12892.0520864601. The cubic root of 166205007 is about 549.8126160557.

Adding to 166205007 its reverse (700502661), we get a palindrome (866707668).

The spelling of 166205007 in words is "one hundred sixty-six million, two hundred five thousand, seven".