6505407700 has 54 divisors (see below), whose sum is σ = 15516770318. Its totient is φ = 2365598400.

The previous prime is 6505407659. The next prime is 6505407703. The reversal of 6505407700 is 77045056.

It can be written as a sum of positive squares in 3 ways, for example, as 662596 + 6504745104 = 814^2 + 80652^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6505407703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 256719 + ... + 280918.

Almost surely, 2^6505407700 is an apocalyptic number.

It is an amenable number.

6505407700 is an abundant number, since it is smaller than the sum of its proper divisors (9011362618).

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

6505407700 is a wasteful number, since it uses less digits than its factorization.

6505407700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537673 (or 537655 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 34.

The square root of 6505407700 is about 80656.1076422610. The cubic root of 6505407700 is about 1866.7729811189.

The spelling of 6505407700 in words is "six billion, five hundred five million, four hundred seven thousand, seven hundred".