166352456 has 8 divisors (see below), whose sum is σ = 311910870. Its totient is φ = 83176224.

The previous prime is 166352453. The next prime is 166352471. The reversal of 166352456 is 654253661.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 116424100 + 49928356 = 10790^2 + 7066^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (166352453) by changing a digit.

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, 10397021 + ... + 10397036.

Almost surely, 2^166352456 is an apocalyptic number.

It is an amenable number.

166352456 is a deficient number, since it is larger than the sum of its proper divisors (145558414).

166352456 is a wasteful number, since it uses less digits than its factorization.

166352456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20794063 (or 20794059 counting only the distinct ones).

The product of its digits is 129600, while the sum is 38.

The square root of 166352456 is about 12897.7694195547. The cubic root of 166352456 is about 549.9751570046.

It can be divided in two parts, 16635 and 2456, that added together give a palindrome (19091).

The spelling of 166352456 in words is "one hundred sixty-six million, three hundred fifty-two thousand, four hundred fifty-six".