866987258 has 8 divisors (see below), whose sum is σ = 1303585920. Its totient is φ = 432458620.

The previous prime is 866987257. The next prime is 866987273. The reversal of 866987258 is 852789668.

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

It is a junction number, because it is equal to n+sod(n) for n = 866987197 and 866987206.

It is not an unprimeable number, because it can be changed into a prime (866987257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 516458 + ... + 518133.

It is an arithmetic number, because the mean of its divisors is an integer number (162948240).

Almost surely, 2^866987258 is an apocalyptic number.

866987258 is a deficient number, since it is larger than the sum of its proper divisors (436598662).

866987258 is a wasteful number, since it uses less digits than its factorization.

866987258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1035012.

The product of its digits is 11612160, while the sum is 59.

The square root of 866987258 is about 29444.6473573721. The cubic root of 866987258 is about 953.5370482822.

The spelling of 866987258 in words is "eight hundred sixty-six million, nine hundred eighty-seven thousand, two hundred fifty-eight".