641436105 has 32 divisors (see below), whose sum is σ = 1090851840. Its totient is φ = 320932800.

The previous prime is 641436101. The next prime is 641436113. The reversal of 641436105 is 501634146.

641436105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 641436105 - 2² = 641436101 is a prime.

It is a super-2 number, since 2×641436105² = 822880553595142050, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (641436101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18430 + ... + 40280.

It is an arithmetic number, because the mean of its divisors is an integer number (34089120).

Almost surely, 2^641436105 is an apocalyptic number.

It is an amenable number.

641436105 is a deficient number, since it is larger than the sum of its proper divisors (449415735).

641436105 is a wasteful number, since it uses less digits than its factorization.

641436105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21981.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 641436105 is about 25326.5888938878. The cubic root of 641436105 is about 862.4179766569.

The spelling of 641436105 in words is "six hundred forty-one million, four hundred thirty-six thousand, one hundred five".