641411810 has 32 divisors (see below), whose sum is σ = 1297416960. Its totient is φ = 226531008.

The previous prime is 641411809. The next prime is 641411851. The reversal of 641411810 is 18114146.

641411810 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 2×641411810² = 822818220014952200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 641411810.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104270 + ... + 110249.

It is an arithmetic number, because the mean of its divisors is an integer number (40544280).

Almost surely, 2^641411810 is an apocalyptic number.

641411810 is an abundant number, since it is smaller than the sum of its proper divisors (656005150).

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

641411810 is a wasteful number, since it uses less digits than its factorization.

641411810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214562.

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 641411810 is about 25326.1092550751. The cubic root of 641411810 is about 862.4070882202.

Adding to 641411810 its reverse (18114146), we get a palindrome (659525956).

The spelling of 641411810 in words is "six hundred forty-one million, four hundred eleven thousand, eight hundred ten".