1670303 has 2 divisors, whose sum is σ = 1670304. Its totient is φ = 1670302.

The previous prime is 1670287. The next prime is 1670327. The reversal of 1670303 is 3030761.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1670303 - 2⁴ = 1670287 is a prime.

It is a super-2 number, since 2×1670303² = 5579824223618, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

1670303 is a modest number, since divided by 303 gives 167 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1670353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 835151 + 835152.

It is an arithmetic number, because the mean of its divisors is an integer number (835152).

2^1670303 is an apocalyptic number.

1670303 is a deficient number, since it is larger than the sum of its proper divisors (1).

1670303 is an equidigital number, since it uses as much as digits as its factorization.

1670303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378, while the sum is 20.

The square root of 1670303 is about 1292.4020272346. The cubic root of 1670303 is about 118.6492745135.

The spelling of 1670303 in words is "one million, six hundred seventy thousand, three hundred three".