23145666 has 8 divisors (see below), whose sum is σ = 46291344. Its totient is φ = 7715220.

The previous prime is 23145637. The next prime is 23145691. The reversal of 23145666 is 66654132.

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

23145666 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1928800 + ... + 1928811.

It is an arithmetic number, because the mean of its divisors is an integer number (5786418).

Almost surely, 2^23145666 is an apocalyptic number.

23145666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23145666 is a wasteful number, since it uses less digits than its factorization.

23145666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3857616.

The product of its digits is 25920, while the sum is 33.

The square root of 23145666 is about 4810.9942839293. The cubic root of 23145666 is about 284.9858041560.

Adding to 23145666 its reverse (66654132), we get a palindrome (89799798).

The spelling of 23145666 in words is "twenty-three million, one hundred forty-five thousand, six hundred sixty-six".