3197945 has 4 divisors (see below), whose sum is σ = 3837540. Its totient is φ = 2558352.

The previous prime is 3197939. The next prime is 3197983. The reversal of 3197945 is 5497913.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5497913 = 877 ⋅6269.

It can be written as a sum of positive squares in 2 ways, for example, as 1590121 + 1607824 = 1261^2 + 1268^2 .

It is a cyclic number.

It is not a de Polignac number, because 3197945 - 2⁶ = 3197881 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3197899 and 3197908.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 319790 + ... + 319799.

It is an arithmetic number, because the mean of its divisors is an integer number (959385).

Almost surely, 2^3197945 is an apocalyptic number.

It is an amenable number.

3197945 is a deficient number, since it is larger than the sum of its proper divisors (639595).

3197945 is an equidigital number, since it uses as much as digits as its factorization.

3197945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639594.

The product of its digits is 34020, while the sum is 38.

The square root of 3197945 is about 1788.2798997920. The cubic root of 3197945 is about 147.3297086710.

Subtracting 3197945 from its reverse (5497913), we obtain a cube (2299968 = 132³).

The spelling of 3197945 in words is "three million, one hundred ninety-seven thousand, nine hundred forty-five".