1670825 has 24 divisors (see below), whose sum is σ = 2296728. Its totient is φ = 1198080.

The previous prime is 1670819. The next prime is 1670827. The reversal of 1670825 is 5280761.

It can be written as a sum of positive squares in 12 ways, for example, as 597529 + 1073296 = 773^2 + 1036^2 .

It is not a de Polignac number, because 1670825 - 2⁶ = 1670761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1670827) 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 23 ways as a sum of consecutive naturals, for example, 17177 + ... + 17273.

It is an arithmetic number, because the mean of its divisors is an integer number (95697).

2^1670825 is an apocalyptic number.

It is an amenable number.

1670825 is a deficient number, since it is larger than the sum of its proper divisors (625903).

1670825 is a wasteful number, since it uses less digits than its factorization.

1670825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173 (or 168 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 1670825 is about 1292.6039610028. The cubic root of 1670825 is about 118.6616332433.

The spelling of 1670825 in words is "one million, six hundred seventy thousand, eight hundred twenty-five".