6445464 has 32 divisors (see below), whose sum is σ = 16189440. Its totient is φ = 2138400.

The previous prime is 6445463. The next prime is 6445493. The reversal of 6445464 is 4645446.

It is an Ulam number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6445463) 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, 6009 + ... + 6999.

It is an arithmetic number, because the mean of its divisors is an integer number (505920).

Almost surely, 2^6445464 is an apocalyptic number.

It is an amenable number.

6445464 is an abundant number, since it is smaller than the sum of its proper divisors (9743976).

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

6445464 is a wasteful number, since it uses less digits than its factorization.

6445464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1271 (or 1267 counting only the distinct ones).

The product of its digits is 46080, while the sum is 33.

The square root of 6445464 is about 2538.7918386508. The cubic root of 6445464 is about 186.1021522349.

The spelling of 6445464 in words is "six million, four hundred forty-five thousand, four hundred sixty-four".