320666968 has 8 divisors (see below), whose sum is σ = 601250580. Its totient is φ = 160333480.

The previous prime is 320666963. The next prime is 320666977. The reversal of 320666968 is 869666023.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320666963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20041678 + ... + 20041693.

Almost surely, 2^320666968 is an apocalyptic number.

It is an amenable number.

320666968 is a deficient number, since it is larger than the sum of its proper divisors (280583612).

320666968 is a wasteful number, since it uses less digits than its factorization.

320666968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40083377 (or 40083373 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 46.

The square root of 320666968 is about 17907.1764385120. The cubic root of 320666968 is about 684.4652569132.

The spelling of 320666968 in words is "three hundred twenty million, six hundred sixty-six thousand, nine hundred sixty-eight".