6471485765 has 16 divisors (see below), whose sum is σ = 7956080496. Its totient is φ = 5051404800.

The previous prime is 6471485759. The next prime is 6471485809. The reversal of 6471485765 is 5675841746.

It can be written as a sum of positive squares in 8 ways, for example, as 536478244 + 5935007521 = 23162^2 + 77039^2 .

It is not a de Polignac number, because 6471485765 - 2⁶ = 6471485701 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19496 + ... + 115425.

It is an arithmetic number, because the mean of its divisors is an integer number (497255031).

Almost surely, 2^6471485765 is an apocalyptic number.

It is an amenable number.

6471485765 is a deficient number, since it is larger than the sum of its proper divisors (1484594731).

6471485765 is a wasteful number, since it uses less digits than its factorization.

6471485765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135160.

The product of its digits is 5644800, while the sum is 53.

The square root of 6471485765 is about 80445.5453396893. The cubic root of 6471485765 is about 1863.5226114995.

The spelling of 6471485765 in words is "six billion, four hundred seventy-one million, four hundred eighty-five thousand, seven hundred sixty-five".