806203540 has 12 divisors (see below), whose sum is σ = 1693027476. Its totient is φ = 322481408.

The previous prime is 806203523. The next prime is 806203543. The reversal of 806203540 is 45302608.

It can be written as a sum of positive squares in 2 ways, for example, as 98962704 + 707240836 = 9948^2 + 26594^2 .

It is a junction number, because it is equal to n+sod(n) for n = 806203499 and 806203508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (806203543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20155069 + ... + 20155108.

It is an arithmetic number, because the mean of its divisors is an integer number (141085623).

Almost surely, 2^806203540 is an apocalyptic number.

It is an amenable number.

806203540 is an abundant number, since it is smaller than the sum of its proper divisors (886823936).

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

806203540 is a wasteful number, since it uses less digits than its factorization.

806203540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40310186 (or 40310184 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 806203540 is about 28393.7236022329. The cubic root of 806203540 is about 930.7111144959.

The spelling of 806203540 in words is "eight hundred six million, two hundred three thousand, five hundred forty".