870101056 has 56 divisors (see below), whose sum is σ = 1944380160. Its totient is φ = 382732800.

The previous prime is 870101051. The next prime is 870101059. The reversal of 870101056 is 650101078.

It is a happy number.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (870101051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1890 + ... + 41758.

Almost surely, 2^870101056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 870101056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (972190080).

870101056 is an abundant number, since it is smaller than the sum of its proper divisors (1074279104).

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

870101056 is a wasteful number, since it uses less digits than its factorization.

870101056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39923 (or 39913 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 870101056 is about 29497.4754173980. The cubic root of 870101056 is about 954.6772320058.

It can be divided in two parts, 870 and 101056, that added together give a triangular number (101926 = T₄₅₁).

The spelling of 870101056 in words is "eight hundred seventy million, one hundred one thousand, fifty-six".