16748609 has 4 divisors (see below), whose sum is σ = 16978116. Its totient is φ = 16519104.

The previous prime is 16748569. The next prime is 16748617. The reversal of 16748609 is 90684761.

16748609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5626384 + 11122225 = 2372^2 + 3335^2 .

It is a cyclic number.

It is not a de Polignac number, because 16748609 - 2⁸ = 16748353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16748659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114644 + ... + 114789.

It is an arithmetic number, because the mean of its divisors is an integer number (4244529).

Almost surely, 2^16748609 is an apocalyptic number.

It is an amenable number.

16748609 is a deficient number, since it is larger than the sum of its proper divisors (229507).

16748609 is an equidigital number, since it uses as much as digits as its factorization.

16748609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229506.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 16748609 is about 4092.5064447109. The cubic root of 16748609 is about 255.8544144959.

The spelling of 16748609 in words is "sixteen million, seven hundred forty-eight thousand, six hundred nine".