613420668 has 96 divisors (see below), whose sum is σ = 1832140800. Its totient is φ = 173855808.

The previous prime is 613420631. The next prime is 613420733. The reversal of 613420668 is 866024316.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 92818 + ... + 99206.

It is an arithmetic number, because the mean of its divisors is an integer number (19084800).

Almost surely, 2^613420668 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 613420668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (916070400).

613420668 is an abundant number, since it is smaller than the sum of its proper divisors (1218720132).

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

613420668 is a wasteful number, since it uses less digits than its factorization.

613420668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6536 (or 6528 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 613420668 is about 24767.3306595604. The cubic root of 613420668 is about 849.6749243669.

The spelling of 613420668 in words is "six hundred thirteen million, four hundred twenty thousand, six hundred sixty-eight".