621259 has 2 divisors, whose sum is σ = 621260. Its totient is φ = 621258.

The previous prime is 621241. The next prime is 621289. The reversal of 621259 is 952126.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 621259 - 2⁵ = 621227 is a prime.

It is a plaindrome in base 14.

It is not a weakly prime, because it can be changed into another prime (621239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310629 + 310630.

It is an arithmetic number, because the mean of its divisors is an integer number (310630).

2⁶²¹²⁵⁹ is an apocalyptic number.

621259 is a deficient number, since it is larger than the sum of its proper divisors (1).

621259 is an equidigital number, since it uses as much as digits as its factorization.

621259 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 25.

The square root of 621259 is about 788.1998477544. The cubic root of 621259 is about 85.3278686415.

The spelling of 621259 in words is "six hundred twenty-one thousand, two hundred fifty-nine".