620825311 has 2 divisors, whose sum is σ = 620825312. Its totient is φ = 620825310.

The previous prime is 620825299. The next prime is 620825327. The reversal of 620825311 is 113528026.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 620825311 - 2¹⁹ = 620301023 is a prime.

It is equal to p_32354236 and since 620825311 and 32354236 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 620825311.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (620825341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310412655 + 310412656.

It is an arithmetic number, because the mean of its divisors is an integer number (310412656).

Almost surely, 2^620825311 is an apocalyptic number.

620825311 is a deficient number, since it is larger than the sum of its proper divisors (1).

620825311 is an equidigital number, since it uses as much as digits as its factorization.

620825311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 620825311 is about 24916.3663281788. The cubic root of 620825311 is about 853.0800876963.

The spelling of 620825311 in words is "six hundred twenty million, eight hundred twenty-five thousand, three hundred eleven".