6440716773 has 48 divisors (see below), whose sum is σ = 9850800960. Its totient is φ = 4050144000.

The previous prime is 6440716759. The next prime is 6440716813. The reversal of 6440716773 is 3776170446.

It is not a de Polignac number, because 6440716773 - 2⁴ = 6440716757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6440716753) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1600558 + ... + 1604576.

It is an arithmetic number, because the mean of its divisors is an integer number (205225020).

Almost surely, 2^6440716773 is an apocalyptic number.

It is an amenable number.

6440716773 is a deficient number, since it is larger than the sum of its proper divisors (3410084187).

6440716773 is a wasteful number, since it uses less digits than its factorization.

6440716773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4210 (or 4207 counting only the distinct ones).

The product of its (nonzero) digits is 592704, while the sum is 45.

The square root of 6440716773 is about 80254.0763637586. The cubic root of 6440716773 is about 1860.5645156085.

The spelling of 6440716773 in words is "six billion, four hundred forty million, seven hundred sixteen thousand, seven hundred seventy-three".