6650685 has 12 divisors (see below), whose sum is σ = 11527932. Its totient is φ = 3547008.

The previous prime is 6650671. The next prime is 6650687. The reversal of 6650685 is 5860566.

It can be written as a sum of positive squares in 2 ways, for example, as 3767481 + 2883204 = 1941^2 + 1698^2 .

It is not a de Polignac number, because 6650685 - 2⁷ = 6650557 is a prime.

It is a super-2 number, since 2×6650685² = 88463221938450, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6650687) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73852 + ... + 73941.

It is an arithmetic number, because the mean of its divisors is an integer number (960661).

Almost surely, 2^6650685 is an apocalyptic number.

It is an amenable number.

6650685 is a deficient number, since it is larger than the sum of its proper divisors (4877247).

6650685 is a wasteful number, since it uses less digits than its factorization.

6650685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147804 (or 147801 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 6650685 is about 2578.8922040287. The cubic root of 6650685 is about 188.0566921978.

The spelling of 6650685 in words is "six million, six hundred fifty thousand, six hundred eighty-five".