16671337 has 4 divisors (see below), whose sum is σ = 16679680. Its totient is φ = 16662996.

The previous prime is 16671331. The next prime is 16671353. The reversal of 16671337 is 73317661.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 73317661 = 1181 ⋅62081.

It is a cyclic number.

It is not a de Polignac number, because 16671337 - 2³ = 16671329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16671331) 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, 808 + ... + 5830.

It is an arithmetic number, because the mean of its divisors is an integer number (4169920).

Almost surely, 2^16671337 is an apocalyptic number.

It is an amenable number.

16671337 is a deficient number, since it is larger than the sum of its proper divisors (8343).

16671337 is an equidigital number, since it uses as much as digits as its factorization.

16671337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8342.

The product of its digits is 15876, while the sum is 34.

The square root of 16671337 is about 4083.0548612528. The cubic root of 16671337 is about 255.4603347061.

Adding to 16671337 its reverse (73317661), we get a palindrome (89988998).

The spelling of 16671337 in words is "sixteen million, six hundred seventy-one thousand, three hundred thirty-seven".