870784667 has 4 divisors (see below), whose sum is σ = 878490840. Its totient is φ = 863078496.

The previous prime is 870784657. The next prime is 870784721. The reversal of 870784667 is 766487078.

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 870784667 - 2¹² = 870780571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (870784657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3852917 + ... + 3853142.

It is an arithmetic number, because the mean of its divisors is an integer number (219622710).

Almost surely, 2^870784667 is an apocalyptic number.

870784667 is a deficient number, since it is larger than the sum of its proper divisors (7706173).

870784667 is a wasteful number, since it uses less digits than its factorization.

870784667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7706172.

The product of its (nonzero) digits is 3161088, while the sum is 53.

The square root of 870784667 is about 29509.0607610612. The cubic root of 870784667 is about 954.9271865028.

The spelling of 870784667 in words is "eight hundred seventy million, seven hundred eighty-four thousand, six hundred sixty-seven".