606405040 has 40 divisors (see below), whose sum is σ = 1411123968. Its totient is φ = 242350080.

The previous prime is 606405017. The next prime is 606405067. The reversal of 606405040 is 40504606.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 606404996 and 606405014.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115104 + ... + 120256.

Almost surely, 2^606405040 is an apocalyptic number.

It is an amenable number.

606405040 is an abundant number, since it is smaller than the sum of its proper divisors (804718928).

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

606405040 is a wasteful number, since it uses less digits than its factorization.

606405040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6637 (or 6631 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 606405040 is about 24625.2926886159. The cubic root of 606405040 is about 846.4232820451.

Adding to 606405040 its reverse (40504606), we get a palindrome (646909646).

The spelling of 606405040 in words is "six hundred six million, four hundred five thousand, forty".