870248643 has 16 divisors (see below), whose sum is σ = 1287273600. Its totient is φ = 518482880.

The previous prime is 870248591. The next prime is 870248651. The reversal of 870248643 is 346842078.

It is a cyclic number.

It is not a de Polignac number, because 870248643 - 2⁹ = 870248131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 870248595 and 870248604.

It is not an unprimeable number, because it can be changed into a prime (870248653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 221538 + ... + 225431.

It is an arithmetic number, because the mean of its divisors is an integer number (80454600).

Almost surely, 2^870248643 is an apocalyptic number.

870248643 is a deficient number, since it is larger than the sum of its proper divisors (417024957).

870248643 is a wasteful number, since it uses less digits than its factorization.

870248643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447042.

The product of its (nonzero) digits is 258048, while the sum is 42.

The square root of 870248643 is about 29499.9769999910. The cubic root of 870248643 is about 954.7312065727.

The spelling of 870248643 in words is "eight hundred seventy million, two hundred forty-eight thousand, six hundred forty-three".