213608783 has 2 divisors, whose sum is σ = 213608784. Its totient is φ = 213608782.

The previous prime is 213608777. The next prime is 213608819. The reversal of 213608783 is 387806312.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213608783 - 2⁶ = 213608719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213608743) 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, 106804391 + 106804392.

It is an arithmetic number, because the mean of its divisors is an integer number (106804392).

Almost surely, 2^213608783 is an apocalyptic number.

213608783 is a deficient number, since it is larger than the sum of its proper divisors (1).

213608783 is an equidigital number, since it uses as much as digits as its factorization.

213608783 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 213608783 is about 14615.3611997788. The cubic root of 213608783 is about 597.7776892389. Note that the first 3 decimals are identical.

The spelling of 213608783 in words is "two hundred thirteen million, six hundred eight thousand, seven hundred eighty-three".