870488505 has 32 divisors (see below), whose sum is σ = 1600905600. Its totient is φ = 448249536.

The previous prime is 870488503. The next prime is 870488513. The reversal of 870488505 is 505884078.

It is not a de Polignac number, because 870488505 - 2¹ = 870488503 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (870488501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 107259 + ... + 115088.

It is an arithmetic number, because the mean of its divisors is an integer number (50028300).

Almost surely, 2^870488505 is an apocalyptic number.

It is an amenable number.

870488505 is a deficient number, since it is larger than the sum of its proper divisors (730417095).

870488505 is a wasteful number, since it uses less digits than its factorization.

870488505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222390 (or 222384 counting only the distinct ones).

The product of its (nonzero) digits is 358400, while the sum is 45.

The square root of 870488505 is about 29504.0421806911. The cubic root of 870488505 is about 954.8189143415.

The spelling of 870488505 in words is "eight hundred seventy million, four hundred eighty-eight thousand, five hundred five".