166322214 has 64 divisors (see below), whose sum is σ = 378060480. Its totient is φ = 54190080.

The previous prime is 166322197. The next prime is 166322231. The reversal of 166322214 is 412223661.

166322214 is a `hidden beast` number, since 1 + 6 + 632 + 2 + 21 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (166322197) and next prime (166322231).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 591754 + ... + 592034.

It is an arithmetic number, because the mean of its divisors is an integer number (5907195).

Almost surely, 2^166322214 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166322214, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189030240).

166322214 is an abundant number, since it is smaller than the sum of its proper divisors (211738266).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166322214 is a wasteful number, since it uses less digits than its factorization.

166322214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502 (or 496 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 166322214 is about 12896.5969930056. The cubic root of 166322214 is about 549.9418274562.

Adding to 166322214 its reverse (412223661), we get a palindrome (578545875).

The spelling of 166322214 in words is "one hundred sixty-six million, three hundred twenty-two thousand, two hundred fourteen".