606780040 has 64 divisors (see below), whose sum is σ = 1409011200. Its totient is φ = 235053312.

The previous prime is 606779981. The next prime is 606780047. The reversal of 606780040 is 40087606.

It is a junction number, because it is equal to n+sod(n) for n = 606779984 and 606780011.

It is not an unprimeable number, because it can be changed into a prime (606780047) 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, 165669 + ... + 169291.

It is an arithmetic number, because the mean of its divisors is an integer number (22015800).

Almost surely, 2^606780040 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 606780040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (704505600).

606780040 is an abundant number, since it is smaller than the sum of its proper divisors (802231160).

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

606780040 is a wasteful number, since it uses less digits than its factorization.

606780040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3766 (or 3762 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 606780040 is about 24632.9056345369. The cubic root of 606780040 is about 846.5977217369.

The spelling of 606780040 in words is "six hundred six million, seven hundred eighty thousand, forty".