6477664 has 24 divisors (see below), whose sum is σ = 13099968. Its totient is φ = 3150720.

The previous prime is 6477641. The next prime is 6477671. The reversal of 6477664 is 4667746.

It is an Ulam number.

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 3 ways as a sum of consecutive naturals, for example, 1552 + ... + 3919.

It is an arithmetic number, because the mean of its divisors is an integer number (545832).

Almost surely, 2^6477664 is an apocalyptic number.

It is an amenable number.

6477664 is an abundant number, since it is smaller than the sum of its proper divisors (6622304).

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

6477664 is a wasteful number, since it uses less digits than its factorization.

6477664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5518 (or 5510 counting only the distinct ones).

The product of its digits is 169344, while the sum is 40.

The square root of 6477664 is about 2545.1255371789. The cubic root of 6477664 is about 186.4115449019.

The spelling of 6477664 in words is "six million, four hundred seventy-seven thousand, six hundred sixty-four".