1345783 has 2 divisors, whose sum is σ = 1345784. Its totient is φ = 1345782.

The previous prime is 1345781. The next prime is 1345787. The reversal of 1345783 is 3875431.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1345783 - 2¹ = 1345781 is a prime.

It is a super-2 number, since 2×1345783² = 3622263766178, which contains 22 as substring.

Together with 1345781, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1345781) 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 as a sum of consecutive naturals, namely, 672891 + 672892.

It is an arithmetic number, because the mean of its divisors is an integer number (672892).

2^1345783 is an apocalyptic number.

1345783 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345783 is an equidigital number, since it uses as much as digits as its factorization.

1345783 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 31.

The square root of 1345783 is about 1160.0788766287. The cubic root of 1345783 is about 110.4057466990.

It can be divided in two parts, 13 and 45783, that added together give a square (45796 = 214²).

The spelling of 1345783 in words is "one million, three hundred forty-five thousand, seven hundred eighty-three".