866704539 has 8 divisors (see below), whose sum is σ = 1186838800. Its totient is φ = 562186656.

The previous prime is 866704519. The next prime is 866704549. The reversal of 866704539 is 935407668.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 866704539 - 2⁵ = 866704507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (866704519) 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 in 7 ways as a sum of consecutive naturals, for example, 3903964 + ... + 3904185.

It is an arithmetic number, because the mean of its divisors is an integer number (148354850).

Almost surely, 2^866704539 is an apocalyptic number.

866704539 is a deficient number, since it is larger than the sum of its proper divisors (320134261).

866704539 is a wasteful number, since it uses less digits than its factorization.

866704539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7808189.

The product of its (nonzero) digits is 1088640, while the sum is 48.

The square root of 866704539 is about 29439.8461103315. The cubic root of 866704539 is about 953.4333895695.

The spelling of 866704539 in words is "eight hundred sixty-six million, seven hundred four thousand, five hundred thirty-nine".