663763 has 2 divisors, whose sum is σ = 663764. Its totient is φ = 663762.

The previous prime is 663737. The next prime is 663787. The reversal of 663763 is 367366.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 663763 - 2¹⁷ = 532691 is a prime.

It is not a weakly prime, because it can be changed into another prime (663713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331881 + 331882.

It is an arithmetic number, because the mean of its divisors is an integer number (331882).

2⁶⁶³⁷⁶³ is an apocalyptic number.

663763 is a deficient number, since it is larger than the sum of its proper divisors (1).

663763 is an equidigital number, since it uses as much as digits as its factorization.

663763 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 31.

The square root of 663763 is about 814.7165151143. The cubic root of 663763 is about 87.2310325679.

The spelling of 663763 in words is "six hundred sixty-three thousand, seven hundred sixty-three".