6464681 has 8 divisors (see below), whose sum is σ = 6589440. Its totient is φ = 6341328.

The previous prime is 6464639. The next prime is 6464687. The reversal of 6464681 is 1864646.

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

It is a cyclic number.

It is not a de Polignac number, because 6464681 - 2¹⁴ = 6448297 is a prime.

It is a super-2 number, since 2×6464681² = 83584200863522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6464687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13610 + ... + 14076.

It is an arithmetic number, because the mean of its divisors is an integer number (823680).

Almost surely, 2^6464681 is an apocalyptic number.

It is an amenable number.

6464681 is a deficient number, since it is larger than the sum of its proper divisors (124759).

6464681 is a wasteful number, since it uses less digits than its factorization.

6464681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703.

The product of its digits is 27648, while the sum is 35.

The square root of 6464681 is about 2542.5736960804. The cubic root of 6464681 is about 186.2869217975.

Subtracting from 6464681 its sum of digits (35), we obtain a palindrome (6464646).

The spelling of 6464681 in words is "six million, four hundred sixty-four thousand, six hundred eighty-one".