613663873 has 4 divisors (see below), whose sum is σ = 618496000. Its totient is φ = 608831748.

The previous prime is 613663847. The next prime is 613663891. The reversal of 613663873 is 378366316.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-613663873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (613663823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2415873 + ... + 2416126.

It is an arithmetic number, because the mean of its divisors is an integer number (154624000).

Almost surely, 2^613663873 is an apocalyptic number.

It is an amenable number.

613663873 is a deficient number, since it is larger than the sum of its proper divisors (4832127).

613663873 is a wasteful number, since it uses less digits than its factorization.

613663873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4832126.

The product of its digits is 326592, while the sum is 43.

The square root of 613663873 is about 24772.2399673506. The cubic root of 613663873 is about 849.7872007089.

The spelling of 613663873 in words is "six hundred thirteen million, six hundred sixty-three thousand, eight hundred seventy-three".