3653863 has 2 divisors, whose sum is σ = 3653864. Its totient is φ = 3653862.

The previous prime is 3653851. The next prime is 3653911. The reversal of 3653863 is 3683563.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3653863 - 2⁵ = 3653831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3650863) 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, 1826931 + 1826932.

It is an arithmetic number, because the mean of its divisors is an integer number (1826932).

Almost surely, 2^3653863 is an apocalyptic number.

3653863 is a deficient number, since it is larger than the sum of its proper divisors (1).

3653863 is an equidigital number, since it uses as much as digits as its factorization.

3653863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 34.

The square root of 3653863 is about 1911.5080434045. The cubic root of 3653863 is about 154.0224709999.

The spelling of 3653863 in words is "three million, six hundred fifty-three thousand, eight hundred sixty-three".