6464655 has 24 divisors (see below), whose sum is σ = 11796720. Its totient is φ = 3265920.

The previous prime is 6464639. The next prime is 6464687. The reversal of 6464655 is 5564646.

It is a happy number.

6464655 is a `hidden beast` number, since 6 + 4 + 646 + 5 + 5 = 666.

It is not a de Polignac number, because 6464655 - 2⁴ = 6464639 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2926 + ... + 4635.

It is an arithmetic number, because the mean of its divisors is an integer number (491530).

Almost surely, 2^6464655 is an apocalyptic number.

6464655 is a deficient number, since it is larger than the sum of its proper divisors (5332065).

6464655 is a wasteful number, since it uses less digits than its factorization.

6464655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7591 (or 7588 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 6464655 is about 2542.5685831458. The cubic root of 6464655 is about 186.2866720576.

Subtracting from 6464655 its reverse (5564646), we obtain a palindrome (900009).

The spelling of 6464655 in words is "six million, four hundred sixty-four thousand, six hundred fifty-five".