623893 has 2 divisors, whose sum is σ = 623894. Its totient is φ = 623892.

The previous prime is 623881. The next prime is 623923. The reversal of 623893 is 398326.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 603729 + 20164 = 777^2 + 142^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-623893 is a prime.

It is a d-powerful number, because it can be written as 6⁵ + 2¹⁹ + 8⁵ + 3 + 9 + 3¹⁰ .

It is equal to p₅₀₈₉₉ and since 623893 and 50899 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (623803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311946 + 311947.

It is an arithmetic number, because the mean of its divisors is an integer number (311947).

2⁶²³⁸⁹³ is an apocalyptic number.

It is an amenable number.

623893 is a deficient number, since it is larger than the sum of its proper divisors (1).

623893 is an equidigital number, since it uses as much as digits as its factorization.

623893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 31.

The square root of 623893 is about 789.8689764765. The cubic root of 623893 is about 85.4482890120.

The spelling of 623893 in words is "six hundred twenty-three thousand, eight hundred ninety-three".