207985797 has 24 divisors (see below), whose sum is σ = 312655200. Its totient is φ = 133122528.

The previous prime is 207985793. The next prime is 207985801. The reversal of 207985797 is 797589702.

It is an interprime number because it is at equal distance from previous prime (207985793) and next prime (207985801).

It is not a de Polignac number, because 207985797 - 2² = 207985793 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (207985793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18279 + ... + 27387.

It is an arithmetic number, because the mean of its divisors is an integer number (13027300).

Almost surely, 2^207985797 is an apocalyptic number.

It is an amenable number.

207985797 is a deficient number, since it is larger than the sum of its proper divisors (104669403).

207985797 is a wasteful number, since it uses less digits than its factorization.

207985797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9217 (or 9214 counting only the distinct ones).

The product of its (nonzero) digits is 2222640, while the sum is 54.

The square root of 207985797 is about 14421.7126930195. The cubic root of 207985797 is about 592.4857273708.

The spelling of 207985797 in words is "two hundred seven million, nine hundred eighty-five thousand, seven hundred ninety-seven".