166828207 has 16 divisors (see below), whose sum is σ = 205632000. Its totient is φ = 131800032.

The previous prime is 166828201. The next prime is 166828219. The reversal of 166828207 is 702828661.

It is a de Polignac number, because none of the positive numbers 2^k-166828207 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166828207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166828201) 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, 110544 + ... + 112042.

It is an arithmetic number, because the mean of its divisors is an integer number (12852000).

Almost surely, 2^166828207 is an apocalyptic number.

166828207 is a deficient number, since it is larger than the sum of its proper divisors (38803793).

166828207 is a wasteful number, since it uses less digits than its factorization.

166828207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2742.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 166828207 is about 12916.1994023010. The cubic root of 166828207 is about 550.4989488797.

The spelling of 166828207 in words is "one hundred sixty-six million, eight hundred twenty-eight thousand, two hundred seven".