641306412 has 18 divisors (see below), whose sum is σ = 1621080188. Its totient is φ = 213768792.

The previous prime is 641306381. The next prime is 641306423. The reversal of 641306412 is 214603146.

641306412 is a `hidden beast` number, since 6 + 4 + 13 + 0 + 641 + 2 = 666.

641306412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×641306412² = 822547828144627488, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8906998 + ... + 8907069.

Almost surely, 2^641306412 is an apocalyptic number.

It is an amenable number.

641306412 is an abundant number, since it is smaller than the sum of its proper divisors (979773776).

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

641306412 is a wasteful number, since it uses less digits than its factorization.

641306412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17814077 (or 17814072 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 641306412 is about 25324.0283525351. The cubic root of 641306412 is about 862.3598481788.

Adding to 641306412 its reverse (214603146), we get a palindrome (855909558).

The spelling of 641306412 in words is "six hundred forty-one million, three hundred six thousand, four hundred twelve".