1665324968 has 8 divisors (see below), whose sum is σ = 3122484330. Its totient is φ = 832662480.

The previous prime is 1665324967. The next prime is 1665325007. The reversal of 1665324968 is 8694235661.

It can be written as a sum of positive squares in only one way, i.e., 1212571684 + 452753284 = 34822^2 + 21278^2 .

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 (1665324961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104082803 + ... + 104082818.

Almost surely, 2^1665324968 is an apocalyptic number.

It is an amenable number.

1665324968 is a deficient number, since it is larger than the sum of its proper divisors (1457159362).

1665324968 is a wasteful number, since it uses less digits than its factorization.

1665324968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208165627 (or 208165623 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 50.

The square root of 1665324968 is about 40808.3933523485. The cubic root of 1665324968 is about 1185.3128641521.

The spelling of 1665324968 in words is "one billion, six hundred sixty-five million, three hundred twenty-four thousand, nine hundred sixty-eight".