6775664 has 20 divisors (see below), whose sum is σ = 15003504. Its totient is φ = 2903808.

The previous prime is 6775663. The next prime is 6775667. The reversal of 6775664 is 4665776.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6775663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30137 + ... + 30360.

Almost surely, 2^6775664 is an apocalyptic number.

It is an amenable number.

6775664 is an abundant number, since it is smaller than the sum of its proper divisors (8227840).

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

6775664 is a wasteful number, since it uses less digits than its factorization.

6775664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60512 (or 60506 counting only the distinct ones).

The product of its digits is 211680, while the sum is 41.

The square root of 6775664 is about 2603.0105647116. The cubic root of 6775664 is about 189.2273702297.

The spelling of 6775664 in words is "six million, seven hundred seventy-five thousand, six hundred sixty-four".