16671307 has 4 divisors (see below), whose sum is σ = 16734960. Its totient is φ = 16607656.

The previous prime is 16671301. The next prime is 16671311. The reversal of 16671307 is 70317661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70317661 = 17 ⋅4136333.

It is a cyclic number.

It is not a de Polignac number, because 16671307 - 2³ = 16671299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16671301) 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, 31432 + ... + 31957.

It is an arithmetic number, because the mean of its divisors is an integer number (4183740).

Almost surely, 2^16671307 is an apocalyptic number.

16671307 is a deficient number, since it is larger than the sum of its proper divisors (63653).

16671307 is an equidigital number, since it uses as much as digits as its factorization.

16671307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63652.

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 16671307 is about 4083.0511875312. The cubic root of 16671307 is about 255.4601814728.

Adding to 16671307 its reverse (70317661), we get a palindrome (86988968).

The spelling of 16671307 in words is "sixteen million, six hundred seventy-one thousand, three hundred seven".