801806540 has 48 divisors (see below), whose sum is σ = 1700020224. Its totient is φ = 317649600.

The previous prime is 801806531. The next prime is 801806549. The reversal of 801806540 is 45608108.

It is an interprime number because it is at equal distance from previous prime (801806531) and next prime (801806549).

It is a junction number, because it is equal to n+sod(n) for n = 801806497 and 801806506.

It is not an unprimeable number, because it can be changed into a prime (801806549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1646177 + ... + 1646663.

It is an arithmetic number, because the mean of its divisors is an integer number (35417088).

Almost surely, 2^801806540 is an apocalyptic number.

It is an amenable number.

801806540 is an abundant number, since it is smaller than the sum of its proper divisors (898213684).

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

801806540 is a wasteful number, since it uses less digits than its factorization.

801806540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1118 (or 1116 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 801806540 is about 28316.1886559615. The cubic root of 801806540 is about 929.0160093922.

The spelling of 801806540 in words is "eight hundred one million, eight hundred six thousand, five hundred forty".