6464478 has 8 divisors (see below), whose sum is σ = 12928968. Its totient is φ = 2154824.

The previous prime is 6464431. The next prime is 6464483. The reversal of 6464478 is 8744646.

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

6464478 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 538701 + ... + 538712.

It is an arithmetic number, because the mean of its divisors is an integer number (1616121).

Almost surely, 2^6464478 is an apocalyptic number.

6464478 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

6464478 is a wasteful number, since it uses less digits than its factorization.

6464478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1077418.

The product of its digits is 129024, while the sum is 39.

The square root of 6464478 is about 2542.5337755869. The cubic root of 6464478 is about 186.2849718874.

The spelling of 6464478 in words is "six million, four hundred sixty-four thousand, four hundred seventy-eight".