605405540 has 24 divisors (see below), whose sum is σ = 1326628800. Its totient is φ = 231633248.

The previous prime is 605405533. The next prime is 605405551. The reversal of 605405540 is 45504506.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 657590 + ... + 658509.

It is an arithmetic number, because the mean of its divisors is an integer number (55276200).

Almost surely, 2^605405540 is an apocalyptic number.

It is an amenable number.

605405540 is an abundant number, since it is smaller than the sum of its proper divisors (721223260).

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

605405540 is a wasteful number, since it uses less digits than its factorization.

605405540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316131 (or 1316129 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 605405540 is about 24604.9901442776. The cubic root of 605405540 is about 845.9579905628.

The spelling of 605405540 in words is "six hundred five million, four hundred five thousand, five hundred forty".