165664846 has 32 divisors (see below), whose sum is σ = 261255456. Its totient is φ = 78720000.

The previous prime is 165664843. The next prime is 165664859. The reversal of 165664846 is 648466561.

It is a junction number, because it is equal to n+sod(n) for n = 165664796 and 165664805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165664841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 687286 + ... + 687526.

It is an arithmetic number, because the mean of its divisors is an integer number (8164233).

Almost surely, 2^165664846 is an apocalyptic number.

165664846 is a deficient number, since it is larger than the sum of its proper divisors (95590610).

165664846 is a wasteful number, since it uses less digits than its factorization.

165664846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468.

The product of its digits is 829440, while the sum is 46.

The square root of 165664846 is about 12871.0856573950. The cubic root of 165664846 is about 549.2163451146.

It can be divided in two parts, 16566 and 4846, that added together give a palindrome (21412).

The spelling of 165664846 in words is "one hundred sixty-five million, six hundred sixty-four thousand, eight hundred forty-six".