6013991 has 6 divisors (see below), whose sum is σ = 6229392. Its totient is φ = 5805800.

The previous prime is 6013981. The next prime is 6013993. The reversal of 6013991 is 1993106.

It is not a de Polignac number, because 6013991 - 2⁶ = 6013927 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6013993) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2735 + ... + 4416.

It is an arithmetic number, because the mean of its divisors is an integer number (1038232).

Almost surely, 2^6013991 is an apocalyptic number.

6013991 is a deficient number, since it is larger than the sum of its proper divisors (215401).

6013991 is an equidigital number, since it uses as much as digits as its factorization.

6013991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7209 (or 7180 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 29.

The square root of 6013991 is about 2452.3439807662. The cubic root of 6013991 is about 181.8531903876.

The spelling of 6013991 in words is "six million, thirteen thousand, nine hundred ninety-one".