865848320 has 44 divisors (see below), whose sum is σ = 2077033584. Its totient is φ = 346337280.

The previous prime is 865848307. The next prime is 865848329. The reversal of 865848320 is 23848568.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (865848329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79436 + ... + 89675.

Almost surely, 2^865848320 is an apocalyptic number.

865848320 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

865848320 is an abundant number, since it is smaller than the sum of its proper divisors (1211185264).

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

865848320 is a wasteful number, since it uses less digits than its factorization.

865848320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169136 (or 169118 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 44.

The square root of 865848320 is about 29425.3006781579. The cubic root of 865848320 is about 953.1193199267.

The spelling of 865848320 in words is "eight hundred sixty-five million, eight hundred forty-eight thousand, three hundred twenty".