6507645765 has 16 divisors (see below), whose sum is σ = 10436290368. Its totient is φ = 3462725376.

The previous prime is 6507645731. The next prime is 6507645769. The reversal of 6507645765 is 5675467056.

It is not a de Polignac number, because 6507645765 - 2⁷ = 6507645637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6507645769) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 494479 + ... + 507468.

It is an arithmetic number, because the mean of its divisors is an integer number (652268148).

Almost surely, 2^6507645765 is an apocalyptic number.

It is an amenable number.

6507645765 is a deficient number, since it is larger than the sum of its proper divisors (3928644603).

6507645765 is a wasteful number, since it uses less digits than its factorization.

6507645765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002388.

The product of its (nonzero) digits is 5292000, while the sum is 51.

The square root of 6507645765 is about 80669.9805689824. The cubic root of 6507645765 is about 1866.9870327940.

The spelling of 6507645765 in words is "six billion, five hundred seven million, six hundred forty-five thousand, seven hundred sixty-five".