16671437 has 2 divisors, whose sum is σ = 16671438. Its totient is φ = 16671436.

The previous prime is 16671427. The next prime is 16671451. The reversal of 16671437 is 73417661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14891881 + 1779556 = 3859^2 + 1334^2 .

It is a cyclic number.

It is not a de Polignac number, because 16671437 - 2⁸ = 16671181 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 16671397 and 16671406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16671427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8335718 + 8335719.

It is an arithmetic number, because the mean of its divisors is an integer number (8335719).

Almost surely, 2^16671437 is an apocalyptic number.

It is an amenable number.

16671437 is a deficient number, since it is larger than the sum of its proper divisors (1).

16671437 is an equidigital number, since it uses as much as digits as its factorization.

16671437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21168, while the sum is 35.

The square root of 16671437 is about 4083.0671069675. The cubic root of 16671437 is about 255.4608454827.

The spelling of 16671437 in words is "sixteen million, six hundred seventy-one thousand, four hundred thirty-seven".