613630913 has 8 divisors (see below), whose sum is σ = 701567232. Its totient is φ = 525763296.

The previous prime is 613630909. The next prime is 613630921. The reversal of 613630913 is 319036316.

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 613630913 - 2² = 613630909 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 613630913.

It is not an unprimeable number, because it can be changed into a prime (613630613) 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, 3656 + ... + 35222.

It is an arithmetic number, because the mean of its divisors is an integer number (87695904).

Almost surely, 2^613630913 is an apocalyptic number.

It is an amenable number.

613630913 is a deficient number, since it is larger than the sum of its proper divisors (87936319).

613630913 is a wasteful number, since it uses less digits than its factorization.

613630913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34351.

The product of its (nonzero) digits is 8748, while the sum is 32.

The square root of 613630913 is about 24771.5746976247. The cubic root of 613630913 is about 849.7719863607.

The spelling of 613630913 in words is "six hundred thirteen million, six hundred thirty thousand, nine hundred thirteen".