821048670 has 64 divisors (see below), whose sum is σ = 2357893440. Its totient is φ = 202103424.

The previous prime is 821048651. The next prime is 821048689. The reversal of 821048670 is 76840128.

821048670 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (821048651) and next prime (821048689).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 113449 + ... + 120468.

It is an arithmetic number, because the mean of its divisors is an integer number (36842085).

Almost surely, 2^821048670 is an apocalyptic number.

821048670 is an abundant number, since it is smaller than the sum of its proper divisors (1536844770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

821048670 is a wasteful number, since it uses less digits than its factorization.

821048670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233946 (or 233940 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 821048670 is about 28653.9468485582. The cubic root of 821048670 is about 936.3889942975.

Adding to 821048670 its reverse (76840128), we get a palindrome (897888798).

The spelling of 821048670 in words is "eight hundred twenty-one million, forty-eight thousand, six hundred seventy".