16660023 has 8 divisors (see below), whose sum is σ = 22243200. Its totient is φ = 11091768.

The previous prime is 16660013. The next prime is 16660031. The reversal of 16660023 is 32006661.

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

It is not a de Polignac number, because 16660023 - 2⁵ = 16659991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16659975 and 16660002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16660013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 793 + ... + 5826.

It is an arithmetic number, because the mean of its divisors is an integer number (2780400).

Almost surely, 2^16660023 is an apocalyptic number.

16660023 is a deficient number, since it is larger than the sum of its proper divisors (5583177).

16660023 is an equidigital number, since it uses as much as digits as its factorization.

16660023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7461.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 16660023 is about 4081.6691438675. The cubic root of 16660023 is about 255.4025322575.

Adding to 16660023 its reverse (32006661), we get a palindrome (48666684).

The spelling of 16660023 in words is "sixteen million, six hundred sixty thousand, twenty-three".