865816948 has 12 divisors (see below), whose sum is σ = 1525349700. Its totient is φ = 430002752.

The previous prime is 865816927. The next prime is 865816951. The reversal of 865816948 is 849618568.

It can be written as a sum of positive squares in 2 ways, for example, as 217503504 + 648313444 = 14748^2 + 25462^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 725761 + ... + 726952.

It is an arithmetic number, because the mean of its divisors is an integer number (127112475).

Almost surely, 2^865816948 is an apocalyptic number.

It is an amenable number.

865816948 is a deficient number, since it is larger than the sum of its proper divisors (659532752).

865816948 is a wasteful number, since it uses less digits than its factorization.

865816948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1452866 (or 1452864 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 55.

The square root of 865816948 is about 29424.7675946642. The cubic root of 865816948 is about 953.1078084338.

The spelling of 865816948 in words is "eight hundred sixty-five million, eight hundred sixteen thousand, nine hundred forty-eight".