620283664 has 80 divisors (see below), whose sum is σ = 1613646720. Its totient is φ = 223073280.

The previous prime is 620283661. The next prime is 620283721. The reversal of 620283664 is 466382026.

It is not an unprimeable number, because it can be changed into a prime (620283661) 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 in 15 ways as a sum of consecutive naturals, for example, 3349 + ... + 35380.

It is an arithmetic number, because the mean of its divisors is an integer number (20170584).

Almost surely, 2^620283664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 620283664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (806823360).

620283664 is an abundant number, since it is smaller than the sum of its proper divisors (993363056).

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

620283664 is a wasteful number, since it uses less digits than its factorization.

620283664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38768 (or 38762 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 37.

The square root of 620283664 is about 24905.4946547946. The cubic root of 620283664 is about 852.8319219583.

The spelling of 620283664 in words is "six hundred twenty million, two hundred eighty-three thousand, six hundred sixty-four".