166622313 has 64 divisors (see below), whose sum is σ = 275788800. Its totient is φ = 88085760.

The previous prime is 166622279. The next prime is 166622333. The reversal of 166622313 is 313226661.

It is not a de Polignac number, because 166622313 - 2¹⁰ = 166621289 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (166622333) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 733906 + ... + 734132.

It is an arithmetic number, because the mean of its divisors is an integer number (4309200).

Almost surely, 2^166622313 is an apocalyptic number.

166622313 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

166622313 is a deficient number, since it is larger than the sum of its proper divisors (109166487).

166622313 is a wasteful number, since it uses less digits than its factorization.

166622313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342.

The product of its digits is 7776, while the sum is 30.

The square root of 166622313 is about 12908.2265629326. The cubic root of 166622313 is about 550.2723862911.

Adding to 166622313 its reverse (313226661), we get a palindrome (479848974).

The spelling of 166622313 in words is "one hundred sixty-six million, six hundred twenty-two thousand, three hundred thirteen".