6506507140 has 36 divisors (see below), whose sum is σ = 15894469836. Its totient is φ = 2230802112.

The previous prime is 6506507123. The next prime is 6506507153. The reversal of 6506507140 is 417056056.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3364232004 + 3142275136 = 58002^2 + 56056^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6506507096 and 6506507105.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3318667 + ... + 3320626.

It is an arithmetic number, because the mean of its divisors is an integer number (441513051).

Almost surely, 2^6506507140 is an apocalyptic number.

It is an amenable number.

6506507140 is an abundant number, since it is smaller than the sum of its proper divisors (9387962696).

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

6506507140 is a wasteful number, since it uses less digits than its factorization.

6506507140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6639316 (or 6639307 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 6506507140 is about 80662.9229572051. The cubic root of 6506507140 is about 1866.8781392360.

The spelling of 6506507140 in words is "six billion, five hundred six million, five hundred seven thousand, one hundred forty".