861335316 has 24 divisors (see below), whose sum is σ = 2233091840. Its totient is φ = 287111736.

The previous prime is 861335287. The next prime is 861335329. The reversal of 861335316 is 613533168.

It is a happy number.

861335316 is a `hidden beast` number, since 8 + 6 + 1 + 335 + 316 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3987556 + ... + 3987771.

Almost surely, 2^861335316 is an apocalyptic number.

It is an amenable number.

861335316 is an abundant number, since it is smaller than the sum of its proper divisors (1371756524).

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

861335316 is a wasteful number, since it uses less digits than its factorization.

861335316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7975340 (or 7975332 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 861335316 is about 29348.5147153991. The cubic root of 861335316 is about 951.4604741932.

The spelling of 861335316 in words is "eight hundred sixty-one million, three hundred thirty-five thousand, three hundred sixteen".