870906 has 16 divisors (see below), whose sum is σ = 1789344. Its totient is φ = 282384.

The previous prime is 870901. The next prime is 870907. The reversal of 870906 is 609078.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (870901) by changing a digit.

870906 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1740 + ... + 2183.

It is an arithmetic number, because the mean of its divisors is an integer number (111834).

2⁸⁷⁰⁹⁰⁶ is an apocalyptic number.

870906 is an abundant number, since it is smaller than the sum of its proper divisors (918438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

870906 is a wasteful number, since it uses less digits than its factorization.

870906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3965.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 870906 is about 933.2234459121. The cubic root of 870906 is about 95.4971536847.

The spelling of 870906 in words is "eight hundred seventy thousand, nine hundred six".