6416661 has 8 divisors (see below), whose sum is σ = 9005920. Its totient is φ = 4052592.

The previous prime is 6416653. The next prime is 6416677. The reversal of 6416661 is 1666146.

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

It is not a de Polignac number, because 6416661 - 2³ = 6416653 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6416611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56230 + ... + 56343.

It is an arithmetic number, because the mean of its divisors is an integer number (1125740).

Almost surely, 2^6416661 is an apocalyptic number.

It is an amenable number.

6416661 is a deficient number, since it is larger than the sum of its proper divisors (2589259).

6416661 is a wasteful number, since it uses less digits than its factorization.

6416661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112595.

The product of its digits is 5184, while the sum is 30.

The square root of 6416661 is about 2533.1129070770. The cubic root of 6416661 is about 185.8245252226.

The spelling of 6416661 in words is "six million, four hundred sixteen thousand, six hundred sixty-one".