3690397 has 2 divisors, whose sum is σ = 3690398. Its totient is φ = 3690396.

The previous prime is 3690371. The next prime is 3690437. The reversal of 3690397 is 7930963.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3426201 + 264196 = 1851^2 + 514^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3690397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3690307) 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, 1845198 + 1845199.

It is an arithmetic number, because the mean of its divisors is an integer number (1845199).

Almost surely, 2^3690397 is an apocalyptic number.

It is an amenable number.

3690397 is a deficient number, since it is larger than the sum of its proper divisors (1).

3690397 is an equidigital number, since it uses as much as digits as its factorization.

3690397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30618, while the sum is 37.

The square root of 3690397 is about 1921.0406034231. The cubic root of 3690397 is about 154.5341126939.

The spelling of 3690397 in words is "three million, six hundred ninety thousand, three hundred ninety-seven".