806057644 has 18 divisors (see below), whose sum is σ = 1640903460. Its totient is φ = 345453192.

The previous prime is 806057591. The next prime is 806057647. The reversal of 806057644 is 446750608.

It is a junction number, because it is equal to n+sod(n) for n = 806057597 and 806057606.

It is not an unprimeable number, because it can be changed into a prime (806057647) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2056074 + ... + 2056465.

Almost surely, 2^806057644 is an apocalyptic number.

It is an amenable number.

806057644 is an abundant number, since it is smaller than the sum of its proper divisors (834845816).

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

806057644 is a wasteful number, since it uses less digits than its factorization.

806057644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4112557 (or 4112548 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 806057644 is about 28391.1543266560. The cubic root of 806057644 is about 930.6549685337.

The spelling of 806057644 in words is "eight hundred six million, fifty-seven thousand, six hundred forty-four".