6419661 has 8 divisors (see below), whose sum is σ = 8644704. Its totient is φ = 4237200.

The previous prime is 6419653. The next prime is 6419669. The reversal of 6419661 is 1669146.

It is an interprime number because it is at equal distance from previous prime (6419653) and next prime (6419669).

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

It is not a de Polignac number, because 6419661 - 2³ = 6419653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6419669) 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, 10291 + ... + 10896.

It is an arithmetic number, because the mean of its divisors is an integer number (1080588).

Almost surely, 2^6419661 is an apocalyptic number.

It is an amenable number.

6419661 is a deficient number, since it is larger than the sum of its proper divisors (2225043).

6419661 is a wasteful number, since it uses less digits than its factorization.

6419661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21291.

The product of its digits is 7776, while the sum is 33.

The square root of 6419661 is about 2533.7049946669. The cubic root of 6419661 is about 185.8534804024.

The spelling of 6419661 in words is "six million, four hundred nineteen thousand, six hundred sixty-one".