613659606 has 64 divisors (see below), whose sum is σ = 1479928320. Its totient is φ = 165715200.

The previous prime is 613659593. The next prime is 613659611. The reversal of 613659606 is 606956316.

It is a super-2 number, since 2×613659606² = 753156224072150472, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

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, 558850 + ... + 559946.

It is an arithmetic number, because the mean of its divisors is an integer number (23123880).

Almost surely, 2^613659606 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 613659606, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (739964160).

613659606 is an abundant number, since it is smaller than the sum of its proper divisors (866268714).

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

613659606 is a wasteful number, since it uses less digits than its factorization.

613659606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1829.

The product of its (nonzero) digits is 174960, while the sum is 42.

The square root of 613659606 is about 24772.1538425709. The cubic root of 613659606 is about 849.7852310908.

The spelling of 613659606 in words is "six hundred thirteen million, six hundred fifty-nine thousand, six hundred six".