6545723585 has 4 divisors (see below), whose sum is σ = 7854868308. Its totient is φ = 5236578864.

The previous prime is 6545723579. The next prime is 6545723593. The reversal of 6545723585 is 5853275456.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5167309456 + 1378414129 = 71884^2 + 37127^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6545723585 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 654572354 + ... + 654572363.

It is an arithmetic number, because the mean of its divisors is an integer number (1963717077).

Almost surely, 2^6545723585 is an apocalyptic number.

It is an amenable number.

6545723585 is a deficient number, since it is larger than the sum of its proper divisors (1309144723).

6545723585 is a wasteful number, since it uses less digits than its factorization.

6545723585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309144722.

The product of its digits is 5040000, while the sum is 50.

The square root of 6545723585 is about 80905.6461873954. The cubic root of 6545723585 is about 1870.6213521366.

The spelling of 6545723585 in words is "six billion, five hundred forty-five million, seven hundred twenty-three thousand, five hundred eighty-five".