945668321 has 16 divisors (see below), whose sum is σ = 1047260928. Its totient is φ = 848361600.

The previous prime is 945668309. The next prime is 945668363. The reversal of 945668321 is 123866549.

It is a cyclic number.

It is not a de Polignac number, because 945668321 - 2¹⁴ = 945651937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (945668021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141170 + ... + 147716.

It is an arithmetic number, because the mean of its divisors is an integer number (65453808).

Almost surely, 2^945668321 is an apocalyptic number.

It is an amenable number.

945668321 is a deficient number, since it is larger than the sum of its proper divisors (101592607).

945668321 is a wasteful number, since it uses less digits than its factorization.

945668321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6872.

The product of its digits is 311040, while the sum is 44.

The square root of 945668321 is about 30751.7206185280. The cubic root of 945668321 is about 981.5511742370.

It can be divided in two parts, 9456 and 68321, that added together give a palindrome (77777).

The spelling of 945668321 in words is "nine hundred forty-five million, six hundred sixty-eight thousand, three hundred twenty-one".