870851663 has 8 divisors (see below), whose sum is σ = 951892560. Its totient is φ = 790122880.

The previous prime is 870851651. The next prime is 870851669. The reversal of 870851663 is 366158078.

870851663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-870851663 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 (870851669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72170 + ... + 83367.

It is an arithmetic number, because the mean of its divisors is an integer number (118986570).

Almost surely, 2^870851663 is an apocalyptic number.

870851663 is a deficient number, since it is larger than the sum of its proper divisors (81040897).

870851663 is a wasteful number, since it uses less digits than its factorization.

870851663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156057.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 870851663 is about 29510.1959159881. The cubic root of 870851663 is about 954.9516757800.

The spelling of 870851663 in words is "eight hundred seventy million, eight hundred fifty-one thousand, six hundred sixty-three".