166402322 has 4 divisors (see below), whose sum is σ = 249603486. Its totient is φ = 83201160.

The previous prime is 166402297. The next prime is 166402337. The reversal of 166402322 is 223204661.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 143544361 + 22857961 = 11981^2 + 4781^2 .

It is a junction number, because it is equal to n+sod(n) for n = 166402291 and 166402300.

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 as a sum of consecutive naturals, namely, 41600579 + ... + 41600582.

Almost surely, 2^166402322 is an apocalyptic number.

166402322 is a deficient number, since it is larger than the sum of its proper divisors (83201164).

166402322 is an equidigital number, since it uses as much as digits as its factorization.

166402322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83201163.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 166402322 is about 12899.7023996680. The cubic root of 166402322 is about 550.0301052392.

Adding to 166402322 its reverse (223204661), we get a palindrome (389606983).

The spelling of 166402322 in words is "one hundred sixty-six million, four hundred two thousand, three hundred twenty-two".