861006696 has 64 divisors (see below), whose sum is σ = 2369822400. Its totient is φ = 258508800.

The previous prime is 861006691. The next prime is 861006703. The reversal of 861006696 is 696600168.

It is not an unprimeable number, because it can be changed into a prime (861006691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13816 + ... + 43736.

It is an arithmetic number, because the mean of its divisors is an integer number (37028475).

Almost surely, 2^861006696 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 861006696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1184911200).

861006696 is an abundant number, since it is smaller than the sum of its proper divisors (1508815704).

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

861006696 is a wasteful number, since it uses less digits than its factorization.

861006696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30050 (or 30046 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 861006696 is about 29342.9156015553. The cubic root of 861006696 is about 951.3394571679.

The spelling of 861006696 in words is "eight hundred sixty-one million, six thousand, six hundred ninety-six".