23990066 has 8 divisors (see below), whose sum is σ = 36043164. Its totient is φ = 11975680.

The previous prime is 23990059. The next prime is 23990089. The reversal of 23990066 is 66009932.

It can be written as a sum of positive squares in 2 ways, for example, as 20511841 + 3478225 = 4529^2 + 1865^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8075 + ... + 10638.

Almost surely, 2^23990066 is an apocalyptic number.

23990066 is a deficient number, since it is larger than the sum of its proper divisors (12053098).

23990066 is a wasteful number, since it uses less digits than its factorization.

23990066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19356.

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 23990066 is about 4897.9654959993. The cubic root of 23990066 is about 288.4101104935.

Adding to 23990066 its reverse (66009932), we get a palindrome (89999998).

The spelling of 23990066 in words is "twenty-three million, nine hundred ninety thousand, sixty-six".