3197861 has 4 divisors (see below), whose sum is σ = 3258252. Its totient is φ = 3137472.

The previous prime is 3197849. The next prime is 3197863. The reversal of 3197861 is 1687913.

3197861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1687913 = 17 ⋅99289.

It can be written as a sum of positive squares in 2 ways, for example, as 1221025 + 1976836 = 1105^2 + 1406^2 .

It is a cyclic number.

It is not a de Polignac number, because 3197861 - 2⁶ = 3197797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3197863) 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 in 3 ways as a sum of consecutive naturals, for example, 30116 + ... + 30221.

It is an arithmetic number, because the mean of its divisors is an integer number (814563).

Almost surely, 2^3197861 is an apocalyptic number.

It is an amenable number.

3197861 is a deficient number, since it is larger than the sum of its proper divisors (60391).

3197861 is an equidigital number, since it uses as much as digits as its factorization.

3197861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60390.

The product of its digits is 9072, while the sum is 35.

The square root of 3197861 is about 1788.2564133815. The cubic root of 3197861 is about 147.3284186964.

The spelling of 3197861 in words is "three million, one hundred ninety-seven thousand, eight hundred sixty-one".