626239 has 2 divisors, whose sum is σ = 626240. Its totient is φ = 626238.

The previous prime is 626207. The next prime is 626251. The reversal of 626239 is 932626.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 626239 - 2⁵ = 626207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (626539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313119 + 313120.

It is an arithmetic number, because the mean of its divisors is an integer number (313120).

2⁶²⁶²³⁹ is an apocalyptic number.

626239 is a deficient number, since it is larger than the sum of its proper divisors (1).

626239 is an equidigital number, since it uses as much as digits as its factorization.

626239 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 626239 is about 791.3526394724. The cubic root of 626239 is about 85.5552576466. Note that the first 3 decimals are identical.

The spelling of 626239 in words is "six hundred twenty-six thousand, two hundred thirty-nine".