6440832227 has 4 divisors (see below), whose sum is σ = 6662929920. Its totient is φ = 6218734536.

The previous prime is 6440832217. The next prime is 6440832247. The reversal of 6440832227 is 7222380446.

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 6440832227 - 2¹⁸ = 6440570083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6440832217) 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, 111048803 + ... + 111048860.

It is an arithmetic number, because the mean of its divisors is an integer number (1665732480).

Almost surely, 2^6440832227 is an apocalyptic number.

6440832227 is a deficient number, since it is larger than the sum of its proper divisors (222097693).

6440832227 is a wasteful number, since it uses less digits than its factorization.

6440832227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222097692.

The product of its (nonzero) digits is 129024, while the sum is 38.

The square root of 6440832227 is about 80254.7956635614. The cubic root of 6440832227 is about 1860.5756328148.

The spelling of 6440832227 in words is "six billion, four hundred forty million, eight hundred thirty-two thousand, two hundred twenty-seven".