817064420 has 24 divisors (see below), whose sum is σ = 1790437824. Its totient is φ = 312615776.

The previous prime is 817064419. The next prime is 817064459. The reversal of 817064420 is 24460718.

817064420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 887654 + ... + 888573.

It is an arithmetic number, because the mean of its divisors is an integer number (74601576).

Almost surely, 2^817064420 is an apocalyptic number.

It is an amenable number.

817064420 is an abundant number, since it is smaller than the sum of its proper divisors (973373404).

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

817064420 is a wasteful number, since it uses less digits than its factorization.

817064420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1776259 (or 1776257 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 817064420 is about 28584.3387189559. The cubic root of 817064420 is about 934.8718861327.

The spelling of 817064420 in words is "eight hundred seventeen million, sixty-four thousand, four hundred twenty".