866151000 has 384 divisors, whose sum is σ = 3444517440. Its totient is φ = 193536000.

The previous prime is 866150993. The next prime is 866151001. The reversal of 866151000 is 151668.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866151001) 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 95 ways as a sum of consecutive naturals, for example, 1286664 + ... + 1287336.

Almost surely, 2^866151000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 866151000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1722258720).

866151000 is an abundant number, since it is smaller than the sum of its proper divisors (2578366440).

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

866151000 is a wasteful number, since it uses less digits than its factorization.

866151000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724 (or 707 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 866151000 is about 29430.4434217359. The cubic root of 866151000 is about 953.2303696103.

The spelling of 866151000 in words is "eight hundred sixty-six million, one hundred fifty-one thousand".