861252867 has 6 divisors (see below), whose sum is σ = 1244031932. Its totient is φ = 574168572.

The previous prime is 861252851. The next prime is 861252877. The reversal of 861252867 is 768252168.

861252867 is a `hidden beast` number, since 8 + 61 + 2 + 528 + 67 = 666.

861252867 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 861252867 - 2⁴ = 861252851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (861252877) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 47847373 + ... + 47847390.

Almost surely, 2^861252867 is an apocalyptic number.

861252867 is a deficient number, since it is larger than the sum of its proper divisors (382779065).

861252867 is a wasteful number, since it uses less digits than its factorization.

861252867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95694769 (or 95694766 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 861252867 is about 29347.1100280760. The cubic root of 861252867 is about 951.4301145619.

The spelling of 861252867 in words is "eight hundred sixty-one million, two hundred fifty-two thousand, eight hundred sixty-seven".