620676845 has 8 divisors (see below), whose sum is σ = 747711864. Its totient is φ = 494608384.

The previous prime is 620676841. The next prime is 620676853. The reversal of 620676845 is 548676026.

It can be written as a sum of positive squares in 4 ways, for example, as 182277001 + 438399844 = 13501^2 + 20938^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 620676845 - 2² = 620676841 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 620676796 and 620676805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620676841) 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 in 7 ways as a sum of consecutive naturals, for example, 240224 + ... + 242793.

It is an arithmetic number, because the mean of its divisors is an integer number (93463983).

Almost surely, 2^620676845 is an apocalyptic number.

It is an amenable number.

620676845 is a deficient number, since it is larger than the sum of its proper divisors (127035019).

620676845 is a wasteful number, since it uses less digits than its factorization.

620676845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483279.

The product of its (nonzero) digits is 483840, while the sum is 44.

The square root of 620676845 is about 24913.3868632910. The cubic root of 620676845 is about 853.0120795769.

The spelling of 620676845 in words is "six hundred twenty million, six hundred seventy-six thousand, eight hundred forty-five".