3691801 has 2 divisors, whose sum is σ = 3691802. Its totient is φ = 3691800.

The previous prime is 3691789. The next prime is 3691811. The reversal of 3691801 is 1081963.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2371600 + 1320201 = 1540^2 + 1149^2 .

It is a cyclic number.

It is not a de Polignac number, because 3691801 - 2⁷ = 3691673 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3691801.

It is not a weakly prime, because it can be changed into another prime (3691811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1845900 + 1845901.

It is an arithmetic number, because the mean of its divisors is an integer number (1845901).

Almost surely, 2^3691801 is an apocalyptic number.

It is an amenable number.

3691801 is a deficient number, since it is larger than the sum of its proper divisors (1).

3691801 is an equidigital number, since it uses as much as digits as its factorization.

3691801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 3691801 is about 1921.4059956188. The cubic root of 3691801 is about 154.5537075492.

The spelling of 3691801 in words is "three million, six hundred ninety-one thousand, eight hundred one".