6328643011 has 4 divisors (see below), whose sum is σ = 6331060224. Its totient is φ = 6326225800.

The previous prime is 6328643003. The next prime is 6328643017. The reversal of 6328643011 is 1103468236.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6328643011 - 2³ = 6328643003 is a prime.

It is a super-2 number, since 2×6328643011² = 80103444721358292242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6328643017) 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, 1204675 + ... + 1209916.

It is an arithmetic number, because the mean of its divisors is an integer number (1582765056).

Almost surely, 2^6328643011 is an apocalyptic number.

6328643011 is a deficient number, since it is larger than the sum of its proper divisors (2417213).

6328643011 is a wasteful number, since it uses less digits than its factorization.

6328643011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2417212.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 6328643011 is about 79552.7687198881. The cubic root of 6328643011 is about 1849.7095244936.

The spelling of 6328643011 in words is "six billion, three hundred twenty-eight million, six hundred forty-three thousand, eleven".