860602820 has 144 divisors (see below), whose sum is σ = 2297320704. Its totient is φ = 265056000.

The previous prime is 860602807. The next prime is 860602829. The reversal of 860602820 is 28206068.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (860602829) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1710689 + ... + 1711191.

It is an arithmetic number, because the mean of its divisors is an integer number (15953616).

Almost surely, 2^860602820 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 860602820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1148660352).

860602820 is an abundant number, since it is smaller than the sum of its proper divisors (1436717884).

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

860602820 is a wasteful number, since it uses less digits than its factorization.

860602820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642 (or 629 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 860602820 is about 29336.0327924551. The cubic root of 860602820 is about 951.1906843154.

Adding to 860602820 its reverse (28206068), we get a palindrome (888808888).

The spelling of 860602820 in words is "eight hundred sixty million, six hundred two thousand, eight hundred twenty".