6404522331 has 8 divisors (see below), whose sum is σ = 8546931280. Its totient is φ = 4265897472.

The previous prime is 6404522329. The next prime is 6404522347. The reversal of 6404522331 is 1332254046.

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

It is not a de Polignac number, because 6404522331 - 2¹ = 6404522329 is a prime.

It is a super-2 number, since 2×6404522331² = 82035812576555347122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6404522321) 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, 942070 + ... + 948843.

It is an arithmetic number, because the mean of its divisors is an integer number (1068366410).

Almost surely, 2^6404522331 is an apocalyptic number.

6404522331 is a deficient number, since it is larger than the sum of its proper divisors (2142408949).

6404522331 is a wasteful number, since it uses less digits than its factorization.

6404522331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1892045.

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 6404522331 is about 80028.2595774768. The cubic root of 6404522331 is about 1857.0727388384.

Adding to 6404522331 its reverse (1332254046), we get a palindrome (7736776377).

The spelling of 6404522331 in words is "six billion, four hundred four million, five hundred twenty-two thousand, three hundred thirty-one".