865398496 has 12 divisors (see below), whose sum is σ = 1703753352. Its totient is φ = 432699232.

The previous prime is 865398493. The next prime is 865398503. The reversal of 865398496 is 694893568.

It is a self number, because there is not a number n which added to its sum of digits gives 865398496.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (865398493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13521820 + ... + 13521883.

It is an arithmetic number, because the mean of its divisors is an integer number (141979446).

Almost surely, 2^865398496 is an apocalyptic number.

It is an amenable number.

865398496 is a deficient number, since it is larger than the sum of its proper divisors (838354856).

865398496 is a wasteful number, since it uses less digits than its factorization.

865398496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27043713 (or 27043705 counting only the distinct ones).

The product of its digits is 11197440, while the sum is 58.

The square root of 865398496 is about 29417.6561948773. The cubic root of 865398496 is about 952.9542370433.

The spelling of 865398496 in words is "eight hundred sixty-five million, three hundred ninety-eight thousand, four hundred ninety-six".