360168721 has 6 divisors (see below), whose sum is σ = 395888066. Its totient is φ = 327426000.

The previous prime is 360168709. The next prime is 360168773. The reversal of 360168721 is 127861063.

It can be written as a sum of positive squares in only one way, i.e., 349278721 + 10890000 = 18689^2 + 3300^2 .

It is not a de Polignac number, because 360168721 - 2⁵ = 360168689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (360168701) 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 5 ways as a sum of consecutive naturals, for example, 1488180 + ... + 1488421.

Almost surely, 2^360168721 is an apocalyptic number.

It is an amenable number.

360168721 is a deficient number, since it is larger than the sum of its proper divisors (35719345).

360168721 is a wasteful number, since it uses less digits than its factorization.

360168721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2976623 (or 2976612 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 360168721 is about 18978.1116289266. Note that the first 3 decimals coincide. The cubic root of 360168721 is about 711.4897773548.

The spelling of 360168721 in words is "three hundred sixty million, one hundred sixty-eight thousand, seven hundred twenty-one".