3646963 has 2 divisors, whose sum is σ = 3646964. Its totient is φ = 3646962.

The previous prime is 3646961. The next prime is 3646997. The reversal of 3646963 is 3696463.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3646963 - 2¹ = 3646961 is a prime.

Together with 3646961, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3646961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1823481 + 1823482.

It is an arithmetic number, because the mean of its divisors is an integer number (1823482).

Almost surely, 2^3646963 is an apocalyptic number.

3646963 is a deficient number, since it is larger than the sum of its proper divisors (1).

3646963 is an equidigital number, since it uses as much as digits as its factorization.

3646963 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 37.

The square root of 3646963 is about 1909.7023328257. The cubic root of 3646963 is about 153.9254572617.

The spelling of 3646963 in words is "three million, six hundred forty-six thousand, nine hundred sixty-three".