865502484 has 72 divisors (see below), whose sum is σ = 2562805728. Its totient is φ = 224804160.

The previous prime is 865502461. The next prime is 865502531. The reversal of 865502484 is 484205568.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

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

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 60439 + ... + 73374.

It is an arithmetic number, because the mean of its divisors is an integer number (35594524).

Almost surely, 2^865502484 is an apocalyptic number.

865502484 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

865502484 is an abundant number, since it is smaller than the sum of its proper divisors (1697303244).

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

865502484 is a wasteful number, since it uses less digits than its factorization.

865502484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133845 (or 133836 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 42.

The square root of 865502484 is about 29419.4235837482. The cubic root of 865502484 is about 952.9924051384.

The spelling of 865502484 in words is "eight hundred sixty-five million, five hundred two thousand, four hundred eighty-four".