6666064 has 10 divisors (see below), whose sum is σ = 12915530. Its totient is φ = 3333024.

The previous prime is 6666061. The next prime is 6666097. The reversal of 6666064 is 4606666.

It can be written as a sum of positive squares in only one way, i.e., 4080400 + 2585664 = 2020^2 + 1608^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6666061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 208299 + ... + 208330.

It is an arithmetic number, because the mean of its divisors is an integer number (1291553).

Almost surely, 2^6666064 is an apocalyptic number.

It is an amenable number.

6666064 is a deficient number, since it is larger than the sum of its proper divisors (6249466).

6666064 is a wasteful number, since it uses less digits than its factorization.

6666064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416637 (or 416631 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 6666064 is about 2581.8721889358. The cubic root of 6666064 is about 188.2015342948.

The spelling of 6666064 in words is "six million, six hundred sixty-six thousand, sixty-four".