623269 has 2 divisors, whose sum is σ = 623270. Its totient is φ = 623268.

The previous prime is 623263. The next prime is 623279. The reversal of 623269 is 962326.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 407044 + 216225 = 638^2 + 465^2 .

It is a cyclic number.

It is not a de Polignac number, because 623269 - 2³ = 623261 is a prime.

It is a super-2 number, since 2×623269² = 776928492722, which contains 22 as substring.

623269 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (623261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311634 + 311635.

It is an arithmetic number, because the mean of its divisors is an integer number (311635).

2⁶²³²⁶⁹ is an apocalyptic number.

It is an amenable number.

623269 is a deficient number, since it is larger than the sum of its proper divisors (1).

623269 is an equidigital number, since it uses as much as digits as its factorization.

623269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 28.

The square root of 623269 is about 789.4738754386. The cubic root of 623269 is about 85.4197918613.

The spelling of 623269 in words is "six hundred twenty-three thousand, two hundred sixty-nine".