6191998 has 4 divisors (see below), whose sum is σ = 9288000. Its totient is φ = 3095998.

The previous prime is 6191959. The next prime is 6192023. The reversal of 6191998 is 8991916.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1547998 + ... + 1548001.

It is an arithmetic number, because the mean of its divisors is an integer number (2322000).

Almost surely, 2^6191998 is an apocalyptic number.

6191998 is a deficient number, since it is larger than the sum of its proper divisors (3096002).

6191998 is a wasteful number, since it uses less digits than its factorization.

6191998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3096001.

The product of its digits is 34992, while the sum is 43.

The square root of 6191998 is about 2488.3725605303. The cubic root of 6191998 is about 183.6299865743.

The spelling of 6191998 in words is "six million, one hundred ninety-one thousand, nine hundred ninety-eight".