866846550 has 48 divisors (see below), whose sum is σ = 2151594432. Its totient is φ = 230964000.

The previous prime is 866846537. The next prime is 866846579. The reversal of 866846550 is 55648668.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 866846550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 302625 + ... + 305475.

It is an arithmetic number, because the mean of its divisors is an integer number (44824884).

Almost surely, 2^866846550 is an apocalyptic number.

866846550 is an abundant number, since it is smaller than the sum of its proper divisors (1284747882).

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

866846550 is a wasteful number, since it uses less digits than its factorization.

866846550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4893 (or 4888 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 48.

The square root of 866846550 is about 29442.2578957525. The cubic root of 866846550 is about 953.4854606151.

The spelling of 866846550 in words is "eight hundred sixty-six million, eight hundred forty-six thousand, five hundred fifty".