613064816 has 80 divisors (see below), whose sum is σ = 1525569024. Its totient is φ = 231973632.

The previous prime is 613064789. The next prime is 613064819. The reversal of 613064816 is 618460316.

It is a super-2 number, since 2×613064816² = 751696937234227712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613064819) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24335 + ... + 42641.

Almost surely, 2^613064816 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 613064816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (762784512).

613064816 is an abundant number, since it is smaller than the sum of its proper divisors (912504208).

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

613064816 is a wasteful number, since it uses less digits than its factorization.

613064816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18358 (or 18352 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 613064816 is about 24760.1457184727. The cubic root of 613064816 is about 849.5105906978.

The spelling of 613064816 in words is "six hundred thirteen million, sixty-four thousand, eight hundred sixteen".