669763 has 2 divisors, whose sum is σ = 669764. Its totient is φ = 669762.

The previous prime is 669733. The next prime is 669787. The reversal of 669763 is 367966.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-669763 is a prime.

669763 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (669733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334881 + 334882.

It is an arithmetic number, because the mean of its divisors is an integer number (334882).

2⁶⁶⁹⁷⁶³ is an apocalyptic number.

669763 is a deficient number, since it is larger than the sum of its proper divisors (1).

669763 is an equidigital number, since it uses as much as digits as its factorization.

669763 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40824, while the sum is 37.

The square root of 669763 is about 818.3904935909. The cubic root of 669763 is about 87.4930824463.

The spelling of 669763 in words is "six hundred sixty-nine thousand, seven hundred sixty-three".