605136420 has 480 divisors, whose sum is σ = 2382766848. Its totient is φ = 125411328.

The previous prime is 605136419. The next prime is 605136439. The reversal of 605136420 is 24631506.

605136420 is a `hidden beast` number, since 6 + 0 + 5 + 13 + 642 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 8289504 + ... + 8289576.

Almost surely, 2^605136420 is an apocalyptic number.

605136420 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 605136420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1191383424).

605136420 is an abundant number, since it is smaller than the sum of its proper divisors (1777630428).

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

605136420 is a wasteful number, since it uses less digits than its factorization.

605136420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161 (or 150 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 605136420 is about 24599.5207270386. The cubic root of 605136420 is about 845.8326211798.

Adding to 605136420 its reverse (24631506), we get a palindrome (629767926).

The spelling of 605136420 in words is "six hundred five million, one hundred thirty-six thousand, four hundred twenty".