641332211 has 8 divisors (see below), whose sum is σ = 709332624. Its totient is φ = 575998560.

The previous prime is 641332199. The next prime is 641332261. The reversal of 641332211 is 112233146.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 641332211 - 2⁶ = 641332147 is a prime.

It is a super-2 number, since 2×641332211² = 822614009732297042, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (641332261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 666185 + ... + 667146.

It is an arithmetic number, because the mean of its divisors is an integer number (88666578).

Almost surely, 2^641332211 is an apocalyptic number.

641332211 is a deficient number, since it is larger than the sum of its proper divisors (68000413).

641332211 is a wasteful number, since it uses less digits than its factorization.

641332211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333381.

The product of its digits is 864, while the sum is 23.

The square root of 641332211 is about 25324.5377252972. The cubic root of 641332211 is about 862.3714119300.

Adding to 641332211 its reverse (112233146), we get a palindrome (753565357).

The spelling of 641332211 in words is "six hundred forty-one million, three hundred thirty-two thousand, two hundred eleven".