1670923 has 2 divisors, whose sum is σ = 1670924. Its totient is φ = 1670922.

The previous prime is 1670899. The next prime is 1670953. The reversal of 1670923 is 3290761.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1670923 - 2⁵ = 1670891 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 1670891 and 1670900.

It is not a weakly prime, because it can be changed into another prime (1670953) 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 as a sum of consecutive naturals, namely, 835461 + 835462.

It is an arithmetic number, because the mean of its divisors is an integer number (835462).

2^1670923 is an apocalyptic number.

1670923 is a deficient number, since it is larger than the sum of its proper divisors (1).

1670923 is an equidigital number, since it uses as much as digits as its factorization.

1670923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 1670923 is about 1292.6418684230. The cubic root of 1670923 is about 118.6639531776.

The spelling of 1670923 in words is "one million, six hundred seventy thousand, nine hundred twenty-three".