6440302171 has 8 divisors (see below), whose sum is σ = 6547235840. Its totient is φ = 6333686568.

The previous prime is 6440302163. The next prime is 6440302201. The reversal of 6440302171 is 1712030446.

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

It is a cyclic number.

It is not a de Polignac number, because 6440302171 - 2³ = 6440302163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6440309171) 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, 38511 + ... + 119848.

It is an arithmetic number, because the mean of its divisors is an integer number (818404480).

Almost surely, 2^6440302171 is an apocalyptic number.

6440302171 is a deficient number, since it is larger than the sum of its proper divisors (106933669).

6440302171 is a wasteful number, since it uses less digits than its factorization.

6440302171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159033.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 6440302171 is about 80251.4932633655. The cubic root of 6440302171 is about 1860.5245919815.

The spelling of 6440302171 in words is "six billion, four hundred forty million, three hundred two thousand, one hundred seventy-one".