801335540 has 24 divisors (see below), whose sum is σ = 1740833640. Its totient is φ = 309481088.

The previous prime is 801335539. The next prime is 801335551. The reversal of 801335540 is 45533108.

It can be written as a sum of positive squares in 4 ways, for example, as 48052624 + 753282916 = 6932^2 + 27446^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 690227 + ... + 691386.

It is an arithmetic number, because the mean of its divisors is an integer number (72534735).

Almost surely, 2^801335540 is an apocalyptic number.

It is an amenable number.

801335540 is an abundant number, since it is smaller than the sum of its proper divisors (939498100).

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

801335540 is a wasteful number, since it uses less digits than its factorization.

801335540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381651 (or 1381649 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 801335540 is about 28307.8706369801. The cubic root of 801335540 is about 928.8340651511.

Adding to 801335540 its reverse (45533108), we get a palindrome (846868648).

The spelling of 801335540 in words is "eight hundred one million, three hundred thirty-five thousand, five hundred forty".