207985243 has 2 divisors, whose sum is σ = 207985244. Its totient is φ = 207985242.

The previous prime is 207985223. The next prime is 207985247. The reversal of 207985243 is 342589702.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-207985243 is a prime.

It is a super-2 number, since 2×207985243² = 86515722611538098, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 207985196 and 207985205.

It is not a weakly prime, because it can be changed into another prime (207985247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103992621 + 103992622.

It is an arithmetic number, because the mean of its divisors is an integer number (103992622).

Almost surely, 2^207985243 is an apocalyptic number.

207985243 is a deficient number, since it is larger than the sum of its proper divisors (1).

207985243 is an equidigital number, since it uses as much as digits as its factorization.

207985243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 207985243 is about 14421.6934858566. The cubic root of 207985243 is about 592.4852013134.

The spelling of 207985243 in words is "two hundred seven million, nine hundred eighty-five thousand, two hundred forty-three".