6219661 has 8 divisors (see below), whose sum is σ = 7123520. Its totient is φ = 5319648.

The previous prime is 6219643. The next prime is 6219667. The reversal of 6219661 is 1669126.

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

It is a cyclic number.

It is not a de Polignac number, because 6219661 - 2⁹ = 6219149 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 (6219667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4945 + ... + 6073.

It is an arithmetic number, because the mean of its divisors is an integer number (890440).

Almost surely, 2^6219661 is an apocalyptic number.

It is an amenable number.

6219661 is a deficient number, since it is larger than the sum of its proper divisors (903859).

6219661 is a wasteful number, since it uses less digits than its factorization.

6219661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1923.

The product of its digits is 3888, while the sum is 31.

The square root of 6219661 is about 2493.9248184338. The cubic root of 6219661 is about 183.9030384694.

The spelling of 6219661 in words is "six million, two hundred nineteen thousand, six hundred sixty-one".