6669685 has 8 divisors (see below), whose sum is σ = 8731296. Its totient is φ = 4850640.

The previous prime is 6669683. The next prime is 6669697. The reversal of 6669685 is 5869666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6669685 - 2¹ = 6669683 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6669683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60579 + ... + 60688.

It is an arithmetic number, because the mean of its divisors is an integer number (1091412).

Almost surely, 2^6669685 is an apocalyptic number.

It is an amenable number.

6669685 is a deficient number, since it is larger than the sum of its proper divisors (2061611).

6669685 is a wasteful number, since it uses less digits than its factorization.

6669685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121283.

The product of its digits is 466560, while the sum is 46.

The square root of 6669685 is about 2582.5733290654. The cubic root of 6669685 is about 188.2356050948.

It can be divided in two parts, 66 and 69685, that added together give a triangular number (69751 = T₃₇₃).

The spelling of 6669685 in words is "six million, six hundred sixty-nine thousand, six hundred eighty-five".