800578644 has 48 divisors (see below), whose sum is σ = 1919214528. Its totient is φ = 259596288.

The previous prime is 800578643. The next prime is 800578679. The reversal of 800578644 is 446875008.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 800578596 and 800578605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (800578643) 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 15 ways as a sum of consecutive naturals, for example, 129594 + ... + 135630.

It is an arithmetic number, because the mean of its divisors is an integer number (39983636).

Almost surely, 2^800578644 is an apocalyptic number.

It is an amenable number.

800578644 is an abundant number, since it is smaller than the sum of its proper divisors (1118635884).

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

800578644 is a wasteful number, since it uses less digits than its factorization.

800578644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6344 (or 6342 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 42.

The square root of 800578644 is about 28294.4984758522. The cubic root of 800578644 is about 928.5415317419.

The spelling of 800578644 in words is "eight hundred million, five hundred seventy-eight thousand, six hundred forty-four".