870048787 has 4 divisors (see below), whose sum is σ = 870940296. Its totient is φ = 869157280.

The previous prime is 870048769. The next prime is 870048793. The reversal of 870048787 is 787840078.

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 870048787 - 2²³ = 861660179 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 870048787.

It is not an unprimeable number, because it can be changed into a prime (870048187) 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 3 ways as a sum of consecutive naturals, for example, 444289 + ... + 446242.

It is an arithmetic number, because the mean of its divisors is an integer number (217735074).

Almost surely, 2^870048787 is an apocalyptic number.

870048787 is a deficient number, since it is larger than the sum of its proper divisors (891509).

870048787 is an equidigital number, since it uses as much as digits as its factorization.

870048787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 891508.

The product of its (nonzero) digits is 702464, while the sum is 49.

The square root of 870048787 is about 29496.5894130152. The cubic root of 870048787 is about 954.6581150603.

The spelling of 870048787 in words is "eight hundred seventy million, forty-eight thousand, seven hundred eighty-seven".