6328591 has 4 divisors (see below), whose sum is σ = 6499672. Its totient is φ = 6157512.

The previous prime is 6328541. The next prime is 6328601. The reversal of 6328591 is 1958236.

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 6328591 - 2¹¹ = 6326543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6328541) 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, 85485 + ... + 85558.

It is an arithmetic number, because the mean of its divisors is an integer number (1624918).

Almost surely, 2^6328591 is an apocalyptic number.

6328591 is a deficient number, since it is larger than the sum of its proper divisors (171081).

6328591 is a wasteful number, since it uses less digits than its factorization.

6328591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171080.

The product of its digits is 12960, while the sum is 34.

The square root of 6328591 is about 2515.6690958868. The cubic root of 6328591 is about 184.9704457293.

The spelling of 6328591 in words is "six million, three hundred twenty-eight thousand, five hundred ninety-one".