16674397 has 8 divisors (see below), whose sum is σ = 16927736. Its totient is φ = 16422912.

The previous prime is 16674389. The next prime is 16674431. The reversal of 16674397 is 79347661.

It can be written as a sum of positive squares in 4 ways, for example, as 881721 + 15792676 = 939^2 + 3974^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 16674397 - 2³ = 16674389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16674347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38293 + ... + 38725.

It is an arithmetic number, because the mean of its divisors is an integer number (2115967).

Almost surely, 2^16674397 is an apocalyptic number.

It is an amenable number.

16674397 is a deficient number, since it is larger than the sum of its proper divisors (253339).

16674397 is an equidigital number, since it uses as much as digits as its factorization.

16674397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 927.

The product of its digits is 190512, while the sum is 43.

The square root of 16674397 is about 4083.4295634919. The cubic root of 16674397 is about 255.4759635427.

It can be divided in two parts, 16674 and 397, that added together give a palindrome (17071).

The spelling of 16674397 in words is "sixteen million, six hundred seventy-four thousand, three hundred ninety-seven".