3646997 has 2 divisors, whose sum is σ = 3646998. Its totient is φ = 3646996.

The previous prime is 3646963. The next prime is 3647003. The reversal of 3646997 is 7996463.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3632836 + 14161 = 1906^2 + 119^2 .

It is an emirp because it is prime and its reverse (7996463) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3646997 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3646927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1823498 + 1823499.

It is an arithmetic number, because the mean of its divisors is an integer number (1823499).

Almost surely, 2^3646997 is an apocalyptic number.

It is an amenable number.

3646997 is a deficient number, since it is larger than the sum of its proper divisors (1).

3646997 is an equidigital number, since it uses as much as digits as its factorization.

3646997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 244944, while the sum is 44.

The square root of 3646997 is about 1909.7112347159. The cubic root of 3646997 is about 153.9259356003.

The spelling of 3646997 in words is "three million, six hundred forty-six thousand, nine hundred ninety-seven".