861863067 has 24 divisors (see below), whose sum is σ = 1342177200. Its totient is φ = 529783488.

The previous prime is 861863029. The next prime is 861863069. The reversal of 861863067 is 760368168.

861863067 is a `hidden beast` number, since 8 + 6 + 1 + 8 + 630 + 6 + 7 = 666.

It is not a de Polignac number, because 861863067 - 2¹² = 861858971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (861863069) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 115609 + ... + 122837.

It is an arithmetic number, because the mean of its divisors is an integer number (55924050).

Almost surely, 2^861863067 is an apocalyptic number.

861863067 is a deficient number, since it is larger than the sum of its proper divisors (480314133).

861863067 is a wasteful number, since it uses less digits than its factorization.

861863067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8267 (or 8264 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 861863067 is about 29357.5044409432. The cubic root of 861863067 is about 951.6547584584.

It can be divided in two parts, 86186 and 3067, that added together give a triangular number (89253 = T₄₂₂).

The spelling of 861863067 in words is "eight hundred sixty-one million, eight hundred sixty-three thousand, sixty-seven".