6495605720 has 32 divisors (see below), whose sum is σ = 15250554720. Its totient is φ = 2485274880.

The previous prime is 6495605693. The next prime is 6495605729. The reversal of 6495605720 is 275065946.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6495605729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3529301 + ... + 3531140.

It is an arithmetic number, because the mean of its divisors is an integer number (476579835).

Almost surely, 2^6495605720 is an apocalyptic number.

It is an amenable number.

6495605720 is an abundant number, since it is smaller than the sum of its proper divisors (8754949000).

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

6495605720 is a wasteful number, since it uses less digits than its factorization.

6495605720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7060475 (or 7060471 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 44.

The square root of 6495605720 is about 80595.3207078426. The cubic root of 6495605720 is about 1865.8349272138.

The spelling of 6495605720 in words is "six billion, four hundred ninety-five million, six hundred five thousand, seven hundred twenty".