3681297 has 6 divisors (see below), whose sum is σ = 5317442. Its totient is φ = 2454192.

The previous prime is 3681287. The next prime is 3681319. The reversal of 3681297 is 7921863.

3681297 is a `hidden beast` number, since 368 + 1 + 297 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2742336 + 938961 = 1656^2 + 969^2 .

It is a de Polignac number, because none of the positive numbers 2^k-3681297 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3681217) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 204508 + ... + 204525.

Almost surely, 2^3681297 is an apocalyptic number.

It is an amenable number.

3681297 is a deficient number, since it is larger than the sum of its proper divisors (1636145).

3681297 is a wasteful number, since it uses less digits than its factorization.

3681297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409039 (or 409036 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 3681297 is about 1918.6706335377. The cubic root of 3681297 is about 154.4069883501.

The spelling of 3681297 in words is "three million, six hundred eighty-one thousand, two hundred ninety-seven".