6464540 has 24 divisors (see below), whose sum is σ = 13638240. Its totient is φ = 2573888.

The previous prime is 6464537. The next prime is 6464551. The reversal of 6464540 is 454646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4646 + ... + 5874.

It is an arithmetic number, because the mean of its divisors is an integer number (568260).

Almost surely, 2^6464540 is an apocalyptic number.

It is an amenable number.

6464540 is an abundant number, since it is smaller than the sum of its proper divisors (7173700).

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

6464540 is a wasteful number, since it uses less digits than its factorization.

6464540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1501 (or 1499 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 6464540 is about 2542.5459681194. The cubic root of 6464540 is about 186.2855674308.

The spelling of 6464540 in words is "six million, four hundred sixty-four thousand, five hundred forty".