613073873 has 4 divisors (see below), whose sum is σ = 649137060. Its totient is φ = 577010688.

The previous prime is 613073869. The next prime is 613073899. The reversal of 613073873 is 378370316.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 552109009 + 60964864 = 23497^2 + 7808^2 .

It is a cyclic number.

It is not a de Polignac number, because 613073873 - 2² = 613073869 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (613073863) 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 3 ways as a sum of consecutive naturals, for example, 18031568 + ... + 18031601.

It is an arithmetic number, because the mean of its divisors is an integer number (162284265).

Almost surely, 2^613073873 is an apocalyptic number.

It is an amenable number.

613073873 is a deficient number, since it is larger than the sum of its proper divisors (36063187).

613073873 is a wasteful number, since it uses less digits than its factorization.

613073873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36063186.

The product of its (nonzero) digits is 63504, while the sum is 38.

The square root of 613073873 is about 24760.3286125205. The cubic root of 613073873 is about 849.5147740399.

The spelling of 613073873 in words is "six hundred thirteen million, seventy-three thousand, eight hundred seventy-three".