613220566 has 16 divisors (see below), whose sum is σ = 1113073056. Its totient is φ = 247349376.

The previous prime is 613220537. The next prime is 613220581. The reversal of 613220566 is 665022316.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1288041 + ... + 1288516.

It is an arithmetic number, because the mean of its divisors is an integer number (69567066).

Almost surely, 2^613220566 is an apocalyptic number.

613220566 is a deficient number, since it is larger than the sum of its proper divisors (499852490).

613220566 is a wasteful number, since it uses less digits than its factorization.

613220566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2576583.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 613220566 is about 24763.2906940899. The cubic root of 613220566 is about 849.5825244031.

The spelling of 613220566 in words is "six hundred thirteen million, two hundred twenty thousand, five hundred sixty-six".