1790345 has 4 divisors (see below), whose sum is σ = 2148420. Its totient is φ = 1432272.

The previous prime is 1790339. The next prime is 1790353. The reversal of 1790345 is 5430971.

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 499849 + 1290496 = 707^2 + 1136^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1790345 is a prime.

It is a Curzon number.

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, 179030 + ... + 179039.

It is an arithmetic number, because the mean of its divisors is an integer number (537105).

2^1790345 is an apocalyptic number.

It is an amenable number.

1790345 is a deficient number, since it is larger than the sum of its proper divisors (358075).

1790345 is an equidigital number, since it uses as much as digits as its factorization.

1790345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358074.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 1790345 is about 1338.0377423675. The cubic root of 1790345 is about 121.4261548374.

The spelling of 1790345 in words is "one million, seven hundred ninety thousand, three hundred forty-five".