217013707 has 2 divisors, whose sum is σ = 217013708. Its totient is φ = 217013706.

The previous prime is 217013681. The next prime is 217013723. The reversal of 217013707 is 707310712.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 217013707 - 2¹¹ = 217011659 is a prime.

It is not a weakly prime, because it can be changed into another prime (217013767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108506853 + 108506854.

It is an arithmetic number, because the mean of its divisors is an integer number (108506854).

Almost surely, 2^217013707 is an apocalyptic number.

217013707 is a deficient number, since it is larger than the sum of its proper divisors (1).

217013707 is an equidigital number, since it uses as much as digits as its factorization.

217013707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2058, while the sum is 28.

The square root of 217013707 is about 14731.3851012048. The cubic root of 217013707 is about 600.9371530707.

The spelling of 217013707 in words is "two hundred seventeen million, thirteen thousand, seven hundred seven".