4663649 has 2 divisors, whose sum is σ = 4663650. Its totient is φ = 4663648.

The previous prime is 4663643. The next prime is 4663657. The reversal of 4663649 is 9463664.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4264225 + 399424 = 2065^2 + 632^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4663649 is a prime.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (4663643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2331824 + 2331825.

It is an arithmetic number, because the mean of its divisors is an integer number (2331825).

Almost surely, 2^4663649 is an apocalyptic number.

It is an amenable number.

4663649 is a deficient number, since it is larger than the sum of its proper divisors (1).

4663649 is an equidigital number, since it uses as much as digits as its factorization.

4663649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 38.

The square root of 4663649 is about 2159.5483324066. The cubic root of 4663649 is about 167.0739032509.

The spelling of 4663649 in words is "four million, six hundred sixty-three thousand, six hundred forty-nine".