641307441 has 4 divisors (see below), whose sum is σ = 855076592. Its totient is φ = 427538292.

The previous prime is 641307427. The next prime is 641307463. The reversal of 641307441 is 144703146.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 641307441 - 2¹³ = 641299249 is a prime.

It is a super-2 number, since 2×641307441² = 822550467763936962, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 641307399 and 641307408.

It is not an unprimeable number, because it can be changed into a prime (641307481) 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, 106884571 + ... + 106884576.

It is an arithmetic number, because the mean of its divisors is an integer number (213769148).

Almost surely, 2^641307441 is an apocalyptic number.

It is an amenable number.

641307441 is a deficient number, since it is larger than the sum of its proper divisors (213769151).

641307441 is a wasteful number, since it uses less digits than its factorization.

641307441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213769150.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 641307441 is about 25324.0486691998. The cubic root of 641307441 is about 862.3603094080.

The spelling of 641307441 in words is "six hundred forty-one million, three hundred seven thousand, four hundred forty-one".