6143661 has 16 divisors (see below), whose sum is σ = 9172800. Its totient is φ = 4063824.

The previous prime is 6143651. The next prime is 6143663. The reversal of 6143661 is 1663416.

6143661 = 61³ + 62³ + ... + 78³.

It is not a de Polignac number, because 6143661 - 2⁵ = 6143629 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6143663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2935 + ... + 4571.

It is an arithmetic number, because the mean of its divisors is an integer number (573300).

Almost surely, 2^6143661 is an apocalyptic number.

It is an amenable number.

6143661 is a deficient number, since it is larger than the sum of its proper divisors (3029139).

6143661 is a wasteful number, since it uses less digits than its factorization.

6143661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1785 (or 1779 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 6143661 is about 2478.6409582673. The cubic root of 6143661 is about 183.1509101864.

The spelling of 6143661 in words is "six million, one hundred forty-three thousand, six hundred sixty-one".