9861867 has 12 divisors (see below), whose sum is σ = 14287104. Its totient is φ = 6555120.

The previous prime is 9861847. The next prime is 9861881. The reversal of 9861867 is 7681689.

It is a happy number.

It is not a de Polignac number, because 9861867 - 2⁸ = 9861611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9861847) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2017 + ... + 4877.

It is an arithmetic number, because the mean of its divisors is an integer number (1190592).

Almost surely, 2^9861867 is an apocalyptic number.

9861867 is a deficient number, since it is larger than the sum of its proper divisors (4425237).

9861867 is a wasteful number, since it uses less digits than its factorization.

9861867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3250 (or 3247 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 9861867 is about 3140.3609665132. The cubic root of 9861867 is about 214.4468709599.

The spelling of 9861867 in words is "nine million, eight hundred sixty-one thousand, eight hundred sixty-seven".