865669252 has 12 divisors (see below), whose sum is σ = 1731338560. Its totient is φ = 371001096.

The previous prime is 865669247. The next prime is 865669253. The reversal of 865669252 is 252966568.

865669252 is an admirable number.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 865669196 and 865669205.

It is not an unprimeable number, because it can be changed into a prime (865669253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15458352 + ... + 15458407.

Almost surely, 2^865669252 is an apocalyptic number.

It is an amenable number.

865669252 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

865669252 is a wasteful number, since it uses less digits than its factorization.

865669252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30916770 (or 30916768 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 49.

The square root of 865669252 is about 29422.2577651682. The cubic root of 865669252 is about 953.0536098273.

The spelling of 865669252 in words is "eight hundred sixty-five million, six hundred sixty-nine thousand, two hundred fifty-two".