613782961 has 8 divisors (see below), whose sum is σ = 671967648. Its totient is φ = 555996000.

The previous prime is 613782947. The next prime is 613782979. The reversal of 613782961 is 169287316.

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 613782961 - 2⁵ = 613782929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (613782661) 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, 96195 + ... + 102376.

It is an arithmetic number, because the mean of its divisors is an integer number (83995956).

Almost surely, 2^613782961 is an apocalyptic number.

It is an amenable number.

613782961 is a deficient number, since it is larger than the sum of its proper divisors (58184687).

613782961 is a wasteful number, since it uses less digits than its factorization.

613782961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198863.

The product of its digits is 108864, while the sum is 43.

The square root of 613782961 is about 24774.6435090396. The cubic root of 613782961 is about 849.8421672343.

It can be divided in two parts, 6137 and 82961, that added together give a palindrome (89098).

The spelling of 613782961 in words is "six hundred thirteen million, seven hundred eighty-two thousand, nine hundred sixty-one".