6019991 has 2 divisors, whose sum is σ = 6019992. Its totient is φ = 6019990.

The previous prime is 6019987. The next prime is 6020039. The reversal of 6019991 is 1999106.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6019991 - 2² = 6019987 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6019931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3009995 + 3009996.

It is an arithmetic number, because the mean of its divisors is an integer number (3009996).

Almost surely, 2^6019991 is an apocalyptic number.

6019991 is a deficient number, since it is larger than the sum of its proper divisors (1).

6019991 is an equidigital number, since it uses as much as digits as its factorization.

6019991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4374, while the sum is 35.

The square root of 6019991 is about 2453.5669952133. The cubic root of 6019991 is about 181.9136469952.

The spelling of 6019991 in words is "six million, nineteen thousand, nine hundred ninety-one".