3673861 has 2 divisors, whose sum is σ = 3673862. Its totient is φ = 3673860.

The previous prime is 3673837. The next prime is 3673867. The reversal of 3673861 is 1683763.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3572100 + 101761 = 1890^2 + 319^2 .

It is a cyclic number.

It is not a de Polignac number, because 3673861 - 2⁹ = 3673349 is a prime.

3673861 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3673867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1836930 + 1836931.

It is an arithmetic number, because the mean of its divisors is an integer number (1836931).

Almost surely, 2^3673861 is an apocalyptic number.

It is an amenable number.

3673861 is a deficient number, since it is larger than the sum of its proper divisors (1).

3673861 is an equidigital number, since it uses as much as digits as its factorization.

3673861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 34.

The square root of 3673861 is about 1916.7318539639. The cubic root of 3673861 is about 154.3029539737.

The spelling of 3673861 in words is "three million, six hundred seventy-three thousand, eight hundred sixty-one".