6566464 has 56 divisors (see below), whose sum is σ = 13898880. Its totient is φ = 3073536.

The previous prime is 6566453. The next prime is 6566479. The reversal of 6566464 is 4646656.

It is a super-4 number, since 4×6566464⁴ (a number of 28 digits) contains 4444 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111267 + ... + 111325.

Almost surely, 2^6566464 is an apocalyptic number.

6566464 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6566464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6949440).

6566464 is an abundant number, since it is smaller than the sum of its proper divisors (7332416).

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

6566464 is a wasteful number, since it uses less digits than its factorization.

6566464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155 (or 145 counting only the distinct ones).

The product of its digits is 103680, while the sum is 37.

The square root of 6566464 is about 2562.5112682679. The cubic root of 6566464 is about 187.2594984614.

The spelling of 6566464 in words is "six million, five hundred sixty-six thousand, four hundred sixty-four".