620676853 has 2 divisors, whose sum is σ = 620676854. Its totient is φ = 620676852.

The previous prime is 620676841. The next prime is 620676863. The reversal of 620676853 is 358676026.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 618666129 + 2010724 = 24873^2 + 1418^2 .

It is a cyclic number.

It is not a de Polignac number, because 620676853 - 2¹³ = 620668661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (620676803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310338426 + 310338427.

It is an arithmetic number, because the mean of its divisors is an integer number (310338427).

Almost surely, 2^620676853 is an apocalyptic number.

It is an amenable number.

620676853 is a deficient number, since it is larger than the sum of its proper divisors (1).

620676853 is an equidigital number, since it uses as much as digits as its factorization.

620676853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 43.

The square root of 620676853 is about 24913.3870238472. The cubic root of 620676853 is about 853.0120832418.

The spelling of 620676853 in words is "six hundred twenty million, six hundred seventy-six thousand, eight hundred fifty-three".