1768145 has 4 divisors (see below), whose sum is σ = 2121780. Its totient is φ = 1414512.

The previous prime is 1768141. The next prime is 1768157. The reversal of 1768145 is 5418671.

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: 5418671 = 937 ⋅5783.

It can be written as a sum of positive squares in 2 ways, for example, as 450241 + 1317904 = 671^2 + 1148^2 .

It is a cyclic number.

It is not a de Polignac number, because 1768145 - 2² = 1768141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1768141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176810 + ... + 176819.

It is an arithmetic number, because the mean of its divisors is an integer number (530445).

2^1768145 is an apocalyptic number.

It is an amenable number.

1768145 is a deficient number, since it is larger than the sum of its proper divisors (353635).

1768145 is an equidigital number, since it uses as much as digits as its factorization.

1768145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353634.

The product of its digits is 6720, while the sum is 32.

The square root of 1768145 is about 1329.7161351206. The cubic root of 1768145 is about 120.9221774929.

The spelling of 1768145 in words is "one million, seven hundred sixty-eight thousand, one hundred forty-five".