16611023 has 16 divisors (see below), whose sum is σ = 20666016. Its totient is φ = 13117440.

The previous prime is 16611013. The next prime is 16611041. The reversal of 16611023 is 32011661.

It is a cyclic number.

It is not a de Polignac number, because 16611023 - 2⁸ = 16610767 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16610986 and 16611004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16611013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 986 + ... + 5847.

It is an arithmetic number, because the mean of its divisors is an integer number (1291626).

Almost surely, 2^16611023 is an apocalyptic number.

16611023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

16611023 is a deficient number, since it is larger than the sum of its proper divisors (4054993).

16611023 is a wasteful number, since it uses less digits than its factorization.

16611023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6874.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 16611023 is about 4075.6622774710. The cubic root of 16611023 is about 255.1518920775.

Adding to 16611023 its reverse (32011661), we get a palindrome (48622684).

The spelling of 16611023 in words is "sixteen million, six hundred eleven thousand, twenty-three".