865533834 has 24 divisors (see below), whose sum is σ = 2045807712. Its totient is φ = 262282920.

The previous prime is 865533827. The next prime is 865533839. The reversal of 865533834 is 438335568.

865533834 is a `hidden beast` number, since 86 + 5 + 533 + 8 + 34 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 865533834.

It is not an unprimeable number, because it can be changed into a prime (865533839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2185494 + ... + 2185889.

It is an arithmetic number, because the mean of its divisors is an integer number (85241988).

Almost surely, 2^865533834 is an apocalyptic number.

865533834 is an abundant number, since it is smaller than the sum of its proper divisors (1180273878).

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

865533834 is a wasteful number, since it uses less digits than its factorization.

865533834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4371402 (or 4371399 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 45.

The square root of 865533834 is about 29419.9563901784. The cubic root of 865533834 is about 953.0039113450.

The spelling of 865533834 in words is "eight hundred sixty-five million, five hundred thirty-three thousand, eight hundred thirty-four".