641211630 has 64 divisors (see below), whose sum is σ = 1560923136. Its totient is φ = 168560000.

The previous prime is 641211629. The next prime is 641211653. The reversal of 641211630 is 36112146.

641211630 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×641211630² = 822304708894513800, 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 641211630.

It is a congruent number.

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, 1305685 + ... + 1306175.

It is an arithmetic number, because the mean of its divisors is an integer number (24389424).

Almost surely, 2^641211630 is an apocalyptic number.

641211630 is an abundant number, since it is smaller than the sum of its proper divisors (919711506).

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

641211630 is a wasteful number, since it uses less digits than its factorization.

641211630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 641211630 is about 25322.1568986530. The cubic root of 641211630 is about 862.3173618744.

Adding to 641211630 its reverse (36112146), we get a palindrome (677323776).

It can be divided in two parts, 6412116 and 30, that added together give a palindrome (6412146).

The spelling of 641211630 in words is "six hundred forty-one million, two hundred eleven thousand, six hundred thirty".