963643 has 2 divisors, whose sum is σ = 963644. Its totient is φ = 963642.

The previous prime is 963629. The next prime is 963653. The reversal of 963643 is 346369.

It is a strong prime.

It is an emirp because it is prime and its reverse (346369) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-963643 is a prime.

It is not a weakly prime, because it can be changed into another prime (963653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 481821 + 481822.

It is an arithmetic number, because the mean of its divisors is an integer number (481822).

2⁹⁶³⁶⁴³ is an apocalyptic number.

963643 is a deficient number, since it is larger than the sum of its proper divisors (1).

963643 is an equidigital number, since it uses as much as digits as its factorization.

963643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 31.

The square root of 963643 is about 981.6531974175. The cubic root of 963643 is about 98.7731089431.

The spelling of 963643 in words is "nine hundred sixty-three thousand, six hundred forty-three".