620229820 has 24 divisors (see below), whose sum is σ = 1488551904. Its totient is φ = 212650176.

The previous prime is 620229793. The next prime is 620229821. The reversal of 620229820 is 28922026.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620229821) 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, 2214967 + ... + 2215246.

It is an arithmetic number, because the mean of its divisors is an integer number (62022996).

Almost surely, 2^620229820 is an apocalyptic number.

It is an amenable number.

620229820 is an abundant number, since it is smaller than the sum of its proper divisors (868322084).

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

620229820 is a wasteful number, since it uses less digits than its factorization.

620229820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4430229 (or 4430227 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 620229820 is about 24904.4136650514. The cubic root of 620229820 is about 852.8072444258.

The spelling of 620229820 in words is "six hundred twenty million, two hundred twenty-nine thousand, eight hundred twenty".