641343147 has 8 divisors (see below), whose sum is σ = 856378944. Its totient is φ = 426934728.

The previous prime is 641343137. The next prime is 641343187. The reversal of 641343147 is 741343146.

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

It is not a de Polignac number, because 641343147 - 2¹⁰ = 641342123 is a prime.

It is a super-2 number, since 2×641343147² = 822642064407727218, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (641343107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154453 + ... + 158550.

It is an arithmetic number, because the mean of its divisors is an integer number (107047368).

Almost surely, 2^641343147 is an apocalyptic number.

641343147 is a deficient number, since it is larger than the sum of its proper divisors (215035797).

641343147 is a wasteful number, since it uses less digits than its factorization.

641343147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313689.

The product of its digits is 24192, while the sum is 33.

The square root of 641343147 is about 25324.7536414473. The cubic root of 641343147 is about 862.3763136226.

Subtracting 641343147 from its reverse (741343146), we obtain a palindrome (99999999).

The spelling of 641343147 in words is "six hundred forty-one million, three hundred forty-three thousand, one hundred forty-seven".