613161065 has 32 divisors (see below), whose sum is σ = 874108800. Its totient is φ = 407877120.

The previous prime is 613161061. The next prime is 613161113. The reversal of 613161065 is 560161316.

It is not a de Polignac number, because 613161065 - 2² = 613161061 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (613161061) 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 31 ways as a sum of consecutive naturals, for example, 20189 + ... + 40421.

It is an arithmetic number, because the mean of its divisors is an integer number (27315900).

Almost surely, 2^613161065 is an apocalyptic number.

It is an amenable number.

613161065 is a deficient number, since it is larger than the sum of its proper divisors (260947735).

613161065 is a wasteful number, since it uses less digits than its factorization.

613161065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20297.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 613161065 is about 24762.0892696880. The cubic root of 613161065 is about 849.5550450873. Note that the first 3 decimals are identical.

The spelling of 613161065 in words is "six hundred thirteen million, one hundred sixty-one thousand, sixty-five".