213604739 has 2 divisors, whose sum is σ = 213604740. Its totient is φ = 213604738.

The previous prime is 213604709. The next prime is 213604747. The reversal of 213604739 is 937406312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213604739 - 2¹⁶ = 213539203 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 213604699 and 213604708.

It is not a weakly prime, because it can be changed into another prime (213604709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106802369 + 106802370.

It is an arithmetic number, because the mean of its divisors is an integer number (106802370).

Almost surely, 2^213604739 is an apocalyptic number.

213604739 is a deficient number, since it is larger than the sum of its proper divisors (1).

213604739 is an equidigital number, since it uses as much as digits as its factorization.

213604739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 213604739 is about 14615.2228515339. Note that the first 3 decimals coincide. The cubic root of 213604739 is about 597.7739168781.

The spelling of 213604739 in words is "two hundred thirteen million, six hundred four thousand, seven hundred thirty-nine".