6646964 has 6 divisors (see below), whose sum is σ = 11632194. Its totient is φ = 3323480.

The previous prime is 6646957. The next prime is 6646967. The reversal of 6646964 is 4696466.

It can be written as a sum of positive squares in only one way, i.e., 6451600 + 195364 = 2540^2 + 442^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6646967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 830867 + ... + 830874.

It is an arithmetic number, because the mean of its divisors is an integer number (1938699).

Almost surely, 2^6646964 is an apocalyptic number.

It is an amenable number.

6646964 is a deficient number, since it is larger than the sum of its proper divisors (4985230).

6646964 is a wasteful number, since it uses less digits than its factorization.

6646964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1661745 (or 1661743 counting only the distinct ones).

The product of its digits is 186624, while the sum is 41.

The square root of 6646964 is about 2578.1706692925. The cubic root of 6646964 is about 188.0216136310.

The spelling of 6646964 in words is "six million, six hundred forty-six thousand, nine hundred sixty-four".