1613345 has 4 divisors (see below), whose sum is σ = 1936020. Its totient is φ = 1290672.

The previous prime is 1613329. The next prime is 1613363. The reversal of 1613345 is 5433161.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5433161 = 2311 ⋅2351.

It can be written as a sum of positive squares in 2 ways, for example, as 190096 + 1423249 = 436^2 + 1193^2 .

It is a cyclic number.

It is not a de Polignac number, because 1613345 - 2⁴ = 1613329 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1613345.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161330 + ... + 161339.

It is an arithmetic number, because the mean of its divisors is an integer number (484005).

2^1613345 is an apocalyptic number.

It is an amenable number.

1613345 is a deficient number, since it is larger than the sum of its proper divisors (322675).

1613345 is an equidigital number, since it uses as much as digits as its factorization.

1613345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322674.

The product of its digits is 1080, while the sum is 23.

The square root of 1613345 is about 1270.1751847678. The cubic root of 1613345 is about 117.2849847791.

The spelling of 1613345 in words is "one million, six hundred thirteen thousand, three hundred forty-five".