8861687 has 4 divisors (see below), whose sum is σ = 8881536. Its totient is φ = 8841840.

The previous prime is 8861683. The next prime is 8861701. The reversal of 8861687 is 7861688.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8861687 - 2² = 8861683 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8861683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9239 + ... + 10152.

It is an arithmetic number, because the mean of its divisors is an integer number (2220384).

Almost surely, 2^8861687 is an apocalyptic number.

8861687 is a deficient number, since it is larger than the sum of its proper divisors (19849).

8861687 is a wasteful number, since it uses less digits than its factorization.

8861687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19848.

The product of its digits is 129024, while the sum is 44.

The square root of 8861687 is about 2976.8585791065. The cubic root of 8861687 is about 206.9373113320.

Subtracting from 8861687 its reverse (7861688), we obtain a palindrome (999999).

The spelling of 8861687 in words is "eight million, eight hundred sixty-one thousand, six hundred eighty-seven".