6002991 has 20 divisors (see below), whose sum is σ = 9214392. Its totient is φ = 3891888.

The previous prime is 6002987. The next prime is 6003001. The reversal of 6002991 is 1992006.

It is a happy number.

It is not a de Polignac number, because 6002991 - 2² = 6002987 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

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 (6002911) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1996 + ... + 3998.

Almost surely, 2^6002991 is an apocalyptic number.

6002991 is a deficient number, since it is larger than the sum of its proper divisors (3211401).

6002991 is a wasteful number, since it uses less digits than its factorization.

6002991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2052 (or 2043 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 6002991 is about 2450.1002020326. The cubic root of 6002991 is about 181.7422487545.

Adding to 6002991 its reverse (1992006), we get a palindrome (7994997).

The spelling of 6002991 in words is "six million, two thousand, nine hundred ninety-one".