613228849 has 4 divisors (see below), whose sum is σ = 614758500. Its totient is φ = 611699200.

The previous prime is 613228807. The next prime is 613228871. The reversal of 613228849 is 948822316.

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 326163600 + 287065249 = 18060^2 + 16943^2 .

It is a cyclic number.

It is not a de Polignac number, because 613228849 - 2¹⁵ = 613196081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (613238849) 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, 764224 + ... + 765025.

It is an arithmetic number, because the mean of its divisors is an integer number (153689625).

Almost surely, 2^613228849 is an apocalyptic number.

It is an amenable number.

613228849 is a deficient number, since it is larger than the sum of its proper divisors (1529651).

613228849 is a wasteful number, since it uses less digits than its factorization.

613228849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1529650.

The product of its digits is 165888, while the sum is 43.

The square root of 613228849 is about 24763.4579370491. The cubic root of 613228849 is about 849.5863495958.

The spelling of 613228849 in words is "six hundred thirteen million, two hundred twenty-eight thousand, eight hundred forty-nine".