6666633 has 6 divisors (see below), whose sum is σ = 9629594. Its totient is φ = 4444416.

The previous prime is 6666617. The next prime is 6666679. The reversal of 6666633 is 3366666.

It can be written as a sum of positive squares in only one way, i.e., 6215049 + 451584 = 2493^2 + 672^2 .

It is not a de Polignac number, because 6666633 - 2⁴ = 6666617 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (6666613) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 370360 + ... + 370377.

Almost surely, 2^6666633 is an apocalyptic number.

It is an amenable number.

6666633 is a deficient number, since it is larger than the sum of its proper divisors (2962961).

6666633 is a wasteful number, since it uses less digits than its factorization.

6666633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740743 (or 740740 counting only the distinct ones).

The product of its digits is 69984, while the sum is 36.

The square root of 6666633 is about 2581.9823779414. The cubic root of 6666633 is about 188.2068889602.

It can be divided in two parts, 666663 and 3, that added together give a palindrome (666666).

The spelling of 6666633 in words is "six million, six hundred sixty-six thousand, six hundred thirty-three".