606405640240 has 160 divisors (see below), whose sum is σ = 1435878669312. Its totient is φ = 238141440000.

The previous prime is 606405640231. The next prime is 606405640261. The reversal of 606405640240 is 42046504606.

It is a self number, because there is not a number n which added to its sum of digits gives 606405640240.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 946030320 + ... + 946030960.

Almost surely, 2^606405640240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 606405640240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (717939334656).

606405640240 is an abundant number, since it is smaller than the sum of its proper divisors (829473029072).

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

606405640240 is a wasteful number, since it uses less digits than its factorization.

606405640240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1559 (or 1553 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 37.

The spelling of 606405640240 in words is "six hundred six billion, four hundred five million, six hundred forty thousand, two hundred forty".