613611252 has 72 divisors (see below), whose sum is σ = 1579398912. Its totient is φ = 200827200.

The previous prime is 613611239. The next prime is 613611253. The reversal of 613611252 is 252116316.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613611253) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1101358 + ... + 1101914.

It is an arithmetic number, because the mean of its divisors is an integer number (21936096).

Almost surely, 2^613611252 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 613611252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (789699456).

613611252 is an abundant number, since it is smaller than the sum of its proper divisors (965787660).

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

613611252 is a wasteful number, since it uses less digits than its factorization.

613611252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069 (or 1064 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 613611252 is about 24771.1778484593. The cubic root of 613611252 is about 849.7629105764.

Adding to 613611252 its reverse (252116316), we get a palindrome (865727568).

The spelling of 613611252 in words is "six hundred thirteen million, six hundred eleven thousand, two hundred fifty-two".