214661437 has 2 divisors, whose sum is σ = 214661438. Its totient is φ = 214661436.

The previous prime is 214661413. The next prime is 214661477. The reversal of 214661437 is 734166412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 174794841 + 39866596 = 13221^2 + 6314^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-214661437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (214661477) 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 as a sum of consecutive naturals, namely, 107330718 + 107330719.

It is an arithmetic number, because the mean of its divisors is an integer number (107330719).

Almost surely, 2^214661437 is an apocalyptic number.

It is an amenable number.

214661437 is a deficient number, since it is larger than the sum of its proper divisors (1).

214661437 is an equidigital number, since it uses as much as digits as its factorization.

214661437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 34.

The square root of 214661437 is about 14651.3288475824. The cubic root of 214661437 is about 598.7580207345.

The spelling of 214661437 in words is "two hundred fourteen million, six hundred sixty-one thousand, four hundred thirty-seven".