6473664 has 42 divisors (see below), whose sum is σ = 18557240. Its totient is φ = 2157696.

The previous prime is 6473659. The next prime is 6473671. The reversal of 6473664 is 4663746.

6473664 is a `hidden beast` number, since 647 + 3 + 6 + 6 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5044 + ... + 6195.

Almost surely, 2^6473664 is an apocalyptic number.

6473664 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

6473664 is an abundant number, since it is smaller than the sum of its proper divisors (12083576).

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

6473664 is a wasteful number, since it uses less digits than its factorization.

6473664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11257 (or 11244 counting only the distinct ones).

The product of its digits is 72576, while the sum is 36.

The square root of 6473664 is about 2544.3395999748. The cubic root of 6473664 is about 186.3731668841.

The spelling of 6473664 in words is "six million, four hundred seventy-three thousand, six hundred sixty-four".