626305 has 4 divisors (see below), whose sum is σ = 751572. Its totient is φ = 501040.

The previous prime is 626261. The next prime is 626317. The reversal of 626305 is 503626.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 94864 + 531441 = 308^2 + 729^2 .

It is not a de Polignac number, because 626305 - 2⁷ = 626177 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

626305 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62626 + ... + 62635.

It is an arithmetic number, because the mean of its divisors is an integer number (187893).

2⁶²⁶³⁰⁵ is an apocalyptic number.

It is an amenable number.

626305 is a deficient number, since it is larger than the sum of its proper divisors (125267).

626305 is a wasteful number, since it uses less digits than its factorization.

626305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125266.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 626305 is about 791.3943391256. The cubic root of 626305 is about 85.5582631278.

The spelling of 626305 in words is "six hundred twenty-six thousand, three hundred five".