620763220 has 96 divisors (see below), whose sum is σ = 1677828096. Its totient is φ = 187228800.

The previous prime is 620763217. The next prime is 620763223. The reversal of 620763220 is 22367026.

It is an interprime number because it is at equal distance from previous prime (620763217) and next prime (620763223).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620763223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41239 + ... + 54241.

It is an arithmetic number, because the mean of its divisors is an integer number (17477376).

Almost surely, 2^620763220 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 620763220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (838914048).

620763220 is an abundant number, since it is smaller than the sum of its proper divisors (1057064876).

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

620763220 is a wasteful number, since it uses less digits than its factorization.

620763220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13061 (or 13059 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 620763220 is about 24915.1203087603. The cubic root of 620763220 is about 853.0516468662.

The spelling of 620763220 in words is "six hundred twenty million, seven hundred sixty-three thousand, two hundred twenty".