6465474778 has 8 divisors (see below), whose sum is σ = 11083671072. Its totient is φ = 2770917756.

The previous prime is 6465474733. The next prime is 6465474779. The reversal of 6465474778 is 8774745646.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (6465474779) 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, 230909800 + ... + 230909827.

It is an arithmetic number, because the mean of its divisors is an integer number (1385458884).

Almost surely, 2^6465474778 is an apocalyptic number.

6465474778 is a deficient number, since it is larger than the sum of its proper divisors (4618196294).

6465474778 is a wasteful number, since it uses less digits than its factorization.

6465474778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461819636.

The product of its digits is 31610880, while the sum is 58.

The square root of 6465474778 is about 80408.1760643779. The cubic root of 6465474778 is about 1862.9454601536.

The spelling of 6465474778 in words is "six billion, four hundred sixty-five million, four hundred seventy-four thousand, seven hundred seventy-eight".