613547681 has 8 divisors (see below), whose sum is σ = 616914144. Its totient is φ = 610188480.

The previous prime is 613547651. The next prime is 613547687. The reversal of 613547681 is 186745316.

613547681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 613547681 - 2¹⁸ = 613285537 is a prime.

It is a super-2 number, since 2×613547681² = 752881513720955522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (613547687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 269510 + ... + 271776.

It is an arithmetic number, because the mean of its divisors is an integer number (77114268).

Almost surely, 2^613547681 is an apocalyptic number.

It is an amenable number.

613547681 is a deficient number, since it is larger than the sum of its proper divisors (3366463).

613547681 is a wasteful number, since it uses less digits than its factorization.

613547681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3631.

The product of its digits is 120960, while the sum is 41.

The square root of 613547681 is about 24769.8946505632. The cubic root of 613547681 is about 849.7335640135.

The spelling of 613547681 in words is "six hundred thirteen million, five hundred forty-seven thousand, six hundred eighty-one".