6440310534 has 64 divisors (see below), whose sum is σ = 14837022720. Its totient is φ = 1825612320.

The previous prime is 6440310533. The next prime is 6440310557. The reversal of 6440310534 is 4350130446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6440310533) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3120787 + ... + 3122849.

It is an arithmetic number, because the mean of its divisors is an integer number (231828480).

Almost surely, 2^6440310534 is an apocalyptic number.

6440310534 is an abundant number, since it is smaller than the sum of its proper divisors (8396712186).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6440310534 is a wasteful number, since it uses less digits than its factorization.

6440310534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2625.

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

The square root of 6440310534 is about 80251.5453682980. The cubic root of 6440310534 is about 1860.5253973040.

The spelling of 6440310534 in words is "six billion, four hundred forty million, three hundred ten thousand, five hundred thirty-four".