865663248 has 40 divisors (see below), whose sum is σ = 2296741888. Its totient is φ = 280755072.

The previous prime is 865663243. The next prime is 865663289. The reversal of 865663248 is 842366568.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 865663197 and 865663206.

It is not an unprimeable number, because it can be changed into a prime (865663243) 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, 241936 + ... + 245487.

Almost surely, 2^865663248 is an apocalyptic number.

It is an amenable number.

865663248 is an abundant number, since it is smaller than the sum of its proper divisors (1431078640).

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

865663248 is a wasteful number, since it uses less digits than its factorization.

865663248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487471 (or 487465 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 48.

The square root of 865663248 is about 29422.1557333925. The cubic root of 865663248 is about 953.0514064658.

The spelling of 865663248 in words is "eight hundred sixty-five million, six hundred sixty-three thousand, two hundred forty-eight".