641305326 has 8 divisors (see below), whose sum is σ = 1282610664. Its totient is φ = 213768440.

The previous prime is 641305321. The next prime is 641305351. The reversal of 641305326 is 623503146.

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

641305326 is an admirable number.

It is a super-2 number, since 2×641305326² = 822545042311932552, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 641305293 and 641305302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641305321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53442105 + ... + 53442116.

It is an arithmetic number, because the mean of its divisors is an integer number (160326333).

Almost surely, 2^641305326 is an apocalyptic number.

641305326 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

641305326 is a wasteful number, since it uses less digits than its factorization.

641305326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106884226.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 641305326 is about 25324.0069104397. The cubic root of 641305326 is about 862.3593613998.

The spelling of 641305326 in words is "six hundred forty-one million, three hundred five thousand, three hundred twenty-six".