641230530 has 16 divisors (see below), whose sum is σ = 1538953344. Its totient is φ = 170994800.

The previous prime is 641230511. The next prime is 641230537. The reversal of 641230530 is 35032146.

It is a happy number.

It is a super-2 number, since 2×641230530² = 822353185208161800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 641230530.

It is not an unprimeable number, because it can be changed into a prime (641230537) 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 7 ways as a sum of consecutive naturals, for example, 10687146 + ... + 10687205.

It is an arithmetic number, because the mean of its divisors is an integer number (96184584).

Almost surely, 2^641230530 is an apocalyptic number.

641230530 is an abundant number, since it is smaller than the sum of its proper divisors (897722814).

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

641230530 is a wasteful number, since it uses less digits than its factorization.

641230530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21374361.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 641230530 is about 25322.5300868614. The cubic root of 641230530 is about 862.3258341880.

Adding to 641230530 its reverse (35032146), we get a palindrome (676262676).

The spelling of 641230530 in words is "six hundred forty-one million, two hundred thirty thousand, five hundred thirty".