620856883 has 2 divisors, whose sum is σ = 620856884. Its totient is φ = 620856882.

The previous prime is 620856877. The next prime is 620856923. The reversal of 620856883 is 388658026.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-620856883 is a prime.

It is not a weakly prime, because it can be changed into another prime (620850883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310428441 + 310428442.

It is an arithmetic number, because the mean of its divisors is an integer number (310428442).

Almost surely, 2^620856883 is an apocalyptic number.

620856883 is a deficient number, since it is larger than the sum of its proper divisors (1).

620856883 is an equidigital number, since it uses as much as digits as its factorization.

620856883 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 552960, while the sum is 46.

The square root of 620856883 is about 24916.9998796003. Note that the first 3 decimals coincide. The cubic root of 620856883 is about 853.0945485479.

The spelling of 620856883 in words is "six hundred twenty million, eight hundred fifty-six thousand, eight hundred eighty-three".