6023991 has 16 divisors (see below), whose sum is σ = 8228864. Its totient is φ = 3919104.

The previous prime is 6023971. The next prime is 6024017. The reversal of 6023991 is 1993206.

It is not a de Polignac number, because 6023991 - 2⁷ = 6023863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6023911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36876 + ... + 37038.

It is an arithmetic number, because the mean of its divisors is an integer number (514304).

Almost surely, 2^6023991 is an apocalyptic number.

6023991 is a deficient number, since it is larger than the sum of its proper divisors (2204873).

6023991 is a wasteful number, since it uses less digits than its factorization.

6023991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 6023991 is about 2454.3819996080. The cubic root of 6023991 is about 181.9539290866.

The spelling of 6023991 in words is "six million, twenty-three thousand, nine hundred ninety-one".