207540868 has 24 divisors (see below), whose sum is σ = 380681280. Its totient is φ = 98815200.

The previous prime is 207540863. The next prime is 207540869. The reversal of 207540868 is 868045702.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 207540868.

It is not an unprimeable number, because it can be changed into a prime (207540863) 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 7 ways as a sum of consecutive naturals, for example, 16143 + ... + 25993.

It is an arithmetic number, because the mean of its divisors is an integer number (15861720).

Almost surely, 2^207540868 is an apocalyptic number.

It is an amenable number.

207540868 is a deficient number, since it is larger than the sum of its proper divisors (173140412).

207540868 is a wasteful number, since it uses less digits than its factorization.

207540868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10107 (or 10105 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 207540868 is about 14406.2787700363. The cubic root of 207540868 is about 592.0629384326.

The spelling of 207540868 in words is "two hundred seven million, five hundred forty thousand, eight hundred sixty-eight".