866460258 has 24 divisors (see below), whose sum is σ = 1877873868. Its totient is φ = 288736512.

The previous prime is 866460247. The next prime is 866460263. The reversal of 866460258 is 852064668.

It can be written as a sum of positive squares in 2 ways, for example, as 751691889 + 114768369 = 27417^2 + 10713^2 .

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 110566 + ... + 118142.

Almost surely, 2^866460258 is an apocalyptic number.

866460258 is an abundant number, since it is smaller than the sum of its proper divisors (1011413610).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

866460258 is a wasteful number, since it uses less digits than its factorization.

866460258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13938 (or 13935 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The square root of 866460258 is about 29435.6970021095. The cubic root of 866460258 is about 953.3438059662.

The spelling of 866460258 in words is "eight hundred sixty-six million, four hundred sixty thousand, two hundred fifty-eight".