1613065 has 4 divisors (see below), whose sum is σ = 1935684. Its totient is φ = 1290448.

The previous prime is 1613057. The next prime is 1613069. The reversal of 1613065 is 5603161.

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 644809 + 968256 = 803^2 + 984^2 .

It is a cyclic number.

It is not a de Polignac number, because 1613065 - 2³ = 1613057 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1613069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161302 + ... + 161311.

It is an arithmetic number, because the mean of its divisors is an integer number (483921).

2^1613065 is an apocalyptic number.

It is an amenable number.

1613065 is a deficient number, since it is larger than the sum of its proper divisors (322619).

1613065 is an equidigital number, since it uses as much as digits as its factorization.

1613065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322618.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 1613065 is about 1270.0649589686. The cubic root of 1613065 is about 117.2781993539.

The spelling of 1613065 in words is "one million, six hundred thirteen thousand, sixty-five".