669733 has 2 divisors, whose sum is σ = 669734. Its totient is φ = 669732.

The previous prime is 669707. The next prime is 669763. The reversal of 669733 is 337966.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 613089 + 56644 = 783^2 + 238^2 .

It is a cyclic number.

It is not a de Polignac number, because 669733 - 2⁵ = 669701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (669763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334866 + 334867.

It is an arithmetic number, because the mean of its divisors is an integer number (334867).

2⁶⁶⁹⁷³³ is an apocalyptic number.

It is an amenable number.

669733 is a deficient number, since it is larger than the sum of its proper divisors (1).

669733 is an equidigital number, since it uses as much as digits as its factorization.

669733 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20412, while the sum is 34.

The square root of 669733 is about 818.3721647270. The cubic root of 669733 is about 87.4917760978.

The spelling of 669733 in words is "six hundred sixty-nine thousand, seven hundred thirty-three".