613505412 has 72 divisors (see below), whose sum is σ = 1682291520. Its totient is φ = 187392960.

The previous prime is 613505339. The next prime is 613505413. The reversal of 613505412 is 214505316.

613505412 is a `hidden beast` number, since 613 + 5 + 0 + 5 + 41 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (613505413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60337 + ... + 69767.

It is an arithmetic number, because the mean of its divisors is an integer number (23365160).

Almost surely, 2^613505412 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 613505412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (841145760).

613505412 is an abundant number, since it is smaller than the sum of its proper divisors (1068786108).

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

613505412 is a wasteful number, since it uses less digits than its factorization.

613505412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9593 (or 9588 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 613505412 is about 24769.0414025250. The cubic root of 613505412 is about 849.7140500653.

The spelling of 613505412 in words is "six hundred thirteen million, five hundred five thousand, four hundred twelve".