3651611 has 2 divisors, whose sum is σ = 3651612. Its totient is φ = 3651610.

The previous prime is 3651607. The next prime is 3651619. The reversal of 3651611 is 1161563.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3651611 - 2² = 3651607 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3651619) 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, 1825805 + 1825806.

It is an arithmetic number, because the mean of its divisors is an integer number (1825806).

Almost surely, 2^3651611 is an apocalyptic number.

3651611 is a deficient number, since it is larger than the sum of its proper divisors (1).

3651611 is an equidigital number, since it uses as much as digits as its factorization.

3651611 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 540, while the sum is 23.

The square root of 3651611 is about 1910.9188889118. The cubic root of 3651611 is about 153.9908214016.

The spelling of 3651611 in words is "three million, six hundred fifty-one thousand, six hundred eleven".