870847247 has 4 divisors (see below), whose sum is σ = 872036040. Its totient is φ = 869658456.

The previous prime is 870847231. The next prime is 870847249. The reversal of 870847247 is 742748078.

870847247 is digitally balanced in base 2, 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 is a cyclic number.

It is not a de Polignac number, because 870847247 - 2⁴ = 870847231 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 (870847249) 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, 593297 + ... + 594762.

It is an arithmetic number, because the mean of its divisors is an integer number (218009010).

Almost surely, 2^870847247 is an apocalyptic number.

870847247 is a deficient number, since it is larger than the sum of its proper divisors (1188793).

870847247 is a wasteful number, since it uses less digits than its factorization.

870847247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1188792.

The product of its (nonzero) digits is 702464, while the sum is 47.

The square root of 870847247 is about 29510.1210942958. The cubic root of 870847247 is about 954.9500616230.

It can be divided in two parts, 8708 and 47247, that added together give a palindrome (55955).

The spelling of 870847247 in words is "eight hundred seventy million, eight hundred forty-seven thousand, two hundred forty-seven".