641306413 has 16 divisors (see below), whose sum is σ = 718777152. Its totient is φ = 571942800.

The previous prime is 641306381. The next prime is 641306423. The reversal of 641306413 is 314603146.

It is not a de Polignac number, because 641306413 - 2⁵ = 641306381 is a prime.

It is a super-2 number, since 2×641306413² = 822547830709853138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641306423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65998 + ... + 75088.

It is an arithmetic number, because the mean of its divisors is an integer number (44923572).

Almost surely, 2^641306413 is an apocalyptic number.

It is an amenable number.

641306413 is a deficient number, since it is larger than the sum of its proper divisors (77470739).

641306413 is an equidigital number, since it uses as much as digits as its factorization.

641306413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9177 (or 9155 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 641306413 is about 25324.0283722792. The cubic root of 641306413 is about 862.3598486270.

Adding to 641306413 its reverse (314603146), we get a palindrome (955909559).

The spelling of 641306413 in words is "six hundred forty-one million, three hundred six thousand, four hundred thirteen".