620848844 has 48 divisors (see below), whose sum is σ = 1413490176. Its totient is φ = 231369600.

The previous prime is 620848841. The next prime is 620848853. The reversal of 620848844 is 448848026.

It is a happy number.

It is a super-2 number, since 2×620848844² = 770906574192272672, which contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 620848795 and 620848804.

It is not an unprimeable number, because it can be changed into a prime (620848841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36737 + ... + 50904.

It is an arithmetic number, because the mean of its divisors is an integer number (29447712).

Almost surely, 2^620848844 is an apocalyptic number.

It is an amenable number.

620848844 is an abundant number, since it is smaller than the sum of its proper divisors (792641332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

620848844 is a wasteful number, since it uses less digits than its factorization.

620848844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87686 (or 87684 counting only the distinct ones).

The product of its (nonzero) digits is 393216, while the sum is 44.

The square root of 620848844 is about 24916.8385635096. The cubic root of 620848844 is about 853.0908665095.

The spelling of 620848844 in words is "six hundred twenty million, eight hundred forty-eight thousand, eight hundred forty-four".