866457012 has 96 divisors (see below), whose sum is σ = 2205665280. Its totient is φ = 263894400.

The previous prime is 866457001. The next prime is 866457029. The reversal of 866457012 is 210754668.

866457012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 823887 + ... + 824937.

It is an arithmetic number, because the mean of its divisors is an integer number (22975680).

Almost surely, 2^866457012 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 866457012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1102832640).

866457012 is an abundant number, since it is smaller than the sum of its proper divisors (1339208268).

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

866457012 is a wasteful number, since it uses less digits than its factorization.

866457012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1213 (or 1211 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 866457012 is about 29435.6418649229. The cubic root of 866457012 is about 953.3426154681.

The spelling of 866457012 in words is "eight hundred sixty-six million, four hundred fifty-seven thousand, twelve".