213652729 has 2 divisors, whose sum is σ = 213652730. Its totient is φ = 213652728.

The previous prime is 213652717. The next prime is 213652757. The reversal of 213652729 is 927256312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 204490000 + 9162729 = 14300^2 + 3027^2 .

It is a cyclic number.

It is not a de Polignac number, because 213652729 - 2⁷ = 213652601 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (213652799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106826364 + 106826365.

It is an arithmetic number, because the mean of its divisors is an integer number (106826365).

Almost surely, 2^213652729 is an apocalyptic number.

It is an amenable number.

213652729 is a deficient number, since it is larger than the sum of its proper divisors (1).

213652729 is an equidigital number, since it uses as much as digits as its factorization.

213652729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 37.

The square root of 213652729 is about 14616.8645406599. The cubic root of 213652729 is about 597.8186802766.

The spelling of 213652729 in words is "two hundred thirteen million, six hundred fifty-two thousand, seven hundred twenty-nine".