8870861 has 4 divisors (see below), whose sum is σ = 9110652. Its totient is φ = 8631072.

The previous prime is 8870837. The next prime is 8870863. The reversal of 8870861 is 1680788.

8870861 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3553225 + 5317636 = 1885^2 + 2306^2 .

It is a cyclic number.

It is not a de Polignac number, because 8870861 - 2¹⁰ = 8869837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8870863) 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, 119840 + ... + 119913.

It is an arithmetic number, because the mean of its divisors is an integer number (2277663).

Almost surely, 2^8870861 is an apocalyptic number.

It is an amenable number.

8870861 is a deficient number, since it is larger than the sum of its proper divisors (239791).

8870861 is a wasteful number, since it uses less digits than its factorization.

8870861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239790.

The product of its (nonzero) digits is 21504, while the sum is 38.

The square root of 8870861 is about 2978.3990666128. The cubic root of 8870861 is about 207.0086968426.

The spelling of 8870861 in words is "eight million, eight hundred seventy thousand, eight hundred sixty-one".