820627 has 2 divisors, whose sum is σ = 820628. Its totient is φ = 820626.

The previous prime is 820619. The next prime is 820637. The reversal of 820627 is 726028.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 820627 - 2³ = 820619 is a prime.

It is a nialpdrome in base 7.

It is a zygodrome in base 7.

It is not a weakly prime, because it can be changed into another prime (820637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 410313 + 410314.

It is an arithmetic number, because the mean of its divisors is an integer number (410314).

2⁸²⁰⁶²⁷ is an apocalyptic number.

820627 is a deficient number, since it is larger than the sum of its proper divisors (1).

820627 is an equidigital number, since it uses as much as digits as its factorization.

820627 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 820627 is about 905.8846504936. The cubic root of 820627 is about 93.6228664882.

The spelling of 820627 in words is "eight hundred twenty thousand, six hundred twenty-seven".