6199978 has 8 divisors (see below), whose sum is σ = 9319968. Its totient is φ = 3093324.

The previous prime is 6199957. The next prime is 6199981. The reversal of 6199978 is 8799916.

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2076 + ... + 4087.

It is an arithmetic number, because the mean of its divisors is an integer number (1164996).

Almost surely, 2^6199978 is an apocalyptic number.

6199978 is a deficient number, since it is larger than the sum of its proper divisors (3119990).

6199978 is a wasteful number, since it uses less digits than its factorization.

6199978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6668.

The product of its digits is 244944, while the sum is 49.

The square root of 6199978 is about 2489.9755018875. The cubic root of 6199978 is about 183.7088377109.

The spelling of 6199978 in words is "six million, one hundred ninety-nine thousand, nine hundred seventy-eight".