861481068 has 24 divisors (see below), whose sum is σ = 2297283072. Its totient is φ = 246137424.

The previous prime is 861481067. The next prime is 861481073. The reversal of 861481068 is 860184168.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (861481063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5127780 + ... + 5127947.

It is an arithmetic number, because the mean of its divisors is an integer number (95720128).

Almost surely, 2^861481068 is an apocalyptic number.

It is an amenable number.

861481068 is an abundant number, since it is smaller than the sum of its proper divisors (1435802004).

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

861481068 is a wasteful number, since it uses less digits than its factorization.

861481068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10255741 (or 10255739 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 42.

The square root of 861481068 is about 29350.9977343190. The cubic root of 861481068 is about 951.5141387158.

The spelling of 861481068 in words is "eight hundred sixty-one million, four hundred eighty-one thousand, sixty-eight".