6545865478 has 8 divisors (see below), whose sum is σ = 9819363168. Its totient is φ = 3272744424.

The previous prime is 6545865463. The next prime is 6545865479. The reversal of 6545865478 is 8745685456.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6545865479) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45726 + ... + 123217.

It is an arithmetic number, because the mean of its divisors is an integer number (1227420396).

Almost surely, 2^6545865478 is an apocalyptic number.

6545865478 is a deficient number, since it is larger than the sum of its proper divisors (3273497690).

6545865478 is a wasteful number, since it uses less digits than its factorization.

6545865478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188318.

The product of its digits is 32256000, while the sum is 58.

The square root of 6545865478 is about 80906.5230868315. The cubic root of 6545865478 is about 1870.6348686539.

The spelling of 6545865478 in words is "six billion, five hundred forty-five million, eight hundred sixty-five thousand, four hundred seventy-eight".