613337681 has 16 divisors (see below), whose sum is σ = 685861440. Its totient is φ = 543654720.

The previous prime is 613337663. The next prime is 613337707. The reversal of 613337681 is 186733316.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-613337681 is a prime.

It is a super-2 number, since 2×613337681² = 752366221868915522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (613337581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 505031 + ... + 506243.

It is an arithmetic number, because the mean of its divisors is an integer number (42866340).

Almost surely, 2^613337681 is an apocalyptic number.

It is an amenable number.

613337681 is a deficient number, since it is larger than the sum of its proper divisors (72523759).

613337681 is a wasteful number, since it uses less digits than its factorization.

613337681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2336.

The product of its digits is 54432, while the sum is 38.

The square root of 613337681 is about 24765.6552709594. The cubic root of 613337681 is about 849.6366063704.

The spelling of 613337681 in words is "six hundred thirteen million, three hundred thirty-seven thousand, six hundred eighty-one".