428693 has 2 divisors, whose sum is σ = 428694. Its totient is φ = 428692.

The previous prime is 428683. The next prime is 428731. The reversal of 428693 is 396824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 339889 + 88804 = 583^2 + 298^2 .

It is a cyclic number.

It is not a de Polignac number, because 428693 - 2⁴ = 428677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214346 + 214347.

It is an arithmetic number, because the mean of its divisors is an integer number (214347).

2⁴²⁸⁶⁹³ is an apocalyptic number.

It is an amenable number.

428693 is a deficient number, since it is larger than the sum of its proper divisors (1).

428693 is an equidigital number, since it uses as much as digits as its factorization.

428693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 32.

The square root of 428693 is about 654.7465158365. The cubic root of 428693 is about 75.4018724309.

The spelling of 428693 in words is "four hundred twenty-eight thousand, six hundred ninety-three".