613610420 has 54 divisors (see below), whose sum is σ = 1341571686. Its totient is φ = 235739840.

The previous prime is 613610381. The next prime is 613610441. The reversal of 613610420 is 24016316.

It is a happy number.

613610420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 70627216 + 542983204 = 8404^2 + 23302^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3212525 + ... + 3212715.

Almost surely, 2^613610420 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 613610420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (670785843).

613610420 is an abundant number, since it is smaller than the sum of its proper divisors (727961266).

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

613610420 is a wasteful number, since it uses less digits than its factorization.

613610420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449 (or 227 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 613610420 is about 24771.1610547427. The cubic root of 613610420 is about 849.7625265096.

Adding to 613610420 its reverse (24016316), we get a palindrome (637626736).

The spelling of 613610420 in words is "six hundred thirteen million, six hundred ten thousand, four hundred twenty".