6143857 has 4 divisors (see below), whose sum is σ = 6153840. Its totient is φ = 6133876.

The previous prime is 6143827. The next prime is 6143861. The reversal of 6143857 is 7583416.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6143857 - 2¹¹ = 6141809 is a prime.

It is a Duffinian number.

6143857 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6143807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4003 + ... + 5320.

It is an arithmetic number, because the mean of its divisors is an integer number (1538460).

Almost surely, 2^6143857 is an apocalyptic number.

It is an amenable number.

6143857 is a deficient number, since it is larger than the sum of its proper divisors (9983).

6143857 is an equidigital number, since it uses as much as digits as its factorization.

6143857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9982.

The product of its digits is 20160, while the sum is 34.

The square root of 6143857 is about 2478.6804957477. The cubic root of 6143857 is about 183.1528578415.

The spelling of 6143857 in words is "six million, one hundred forty-three thousand, eight hundred fifty-seven".