620136330 has 64 divisors (see below), whose sum is σ = 1658216448. Its totient is φ = 147133760.

The previous prime is 620136311. The next prime is 620136359. The reversal of 620136330 is 33631026.

620136330 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 620136330.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4482 + ... + 35501.

It is an arithmetic number, because the mean of its divisors is an integer number (25909632).

Almost surely, 2^620136330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 620136330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (829108224).

620136330 is an abundant number, since it is smaller than the sum of its proper divisors (1038080118).

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

620136330 is a wasteful number, since it uses less digits than its factorization.

620136330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40051.

The product of its (nonzero) digits is 1944, while the sum is 24.

The square root of 620136330 is about 24902.5366177825. The cubic root of 620136330 is about 852.7643931294.

Adding to 620136330 its reverse (33631026), we get a palindrome (653767356).

The spelling of 620136330 in words is "six hundred twenty million, one hundred thirty-six thousand, three hundred thirty".