605339640 has 96 divisors (see below), whose sum is σ = 1996796880. Its totient is φ = 159008256.

The previous prime is 605339611. The next prime is 605339687. The reversal of 605339640 is 46933506.

605339640 is a `hidden beast` number, since 6 + 0 + 5 + 3 + 3 + 9 + 640 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 605339595 and 605339604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11572 + ... + 36668.

Almost surely, 2^605339640 is an apocalyptic number.

605339640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 605339640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (998398440).

605339640 is an abundant number, since it is smaller than the sum of its proper divisors (1391457240).

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

605339640 is a wasteful number, since it uses less digits than its factorization.

605339640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25181 (or 25174 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 36.

The square root of 605339640 is about 24603.6509485889. The cubic root of 605339640 is about 845.9272945248.

The spelling of 605339640 in words is "six hundred five million, three hundred thirty-nine thousand, six hundred forty".