861068250 has 192 divisors, whose sum is σ = 2777808384. Its totient is φ = 188179200.

The previous prime is 861068233. The next prime is 861068267. The reversal of 861068250 is 52860168.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (861068233) and next prime (861068267).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 361062 + ... + 363438.

It is an arithmetic number, because the mean of its divisors is an integer number (14467752).

Almost surely, 2^861068250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 861068250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1388904192).

861068250 is an abundant number, since it is smaller than the sum of its proper divisors (1916740134).

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

861068250 is a wasteful number, since it uses less digits than its factorization.

861068250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2430 (or 2417 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 861068250 is about 29343.9644560853. The cubic root of 861068250 is about 951.3621272795.

The spelling of 861068250 in words is "eight hundred sixty-one million, sixty-eight thousand, two hundred fifty".