6116391 has 10 divisors (see below), whose sum is σ = 9136952. Its totient is φ = 4077540.

The previous prime is 6116381. The next prime is 6116401. The reversal of 6116391 is 1936116.

It is an interprime number because it is at equal distance from previous prime (6116381) and next prime (6116401).

It is not a de Polignac number, because 6116391 - 2⁷ = 6116263 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6116371) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 37675 + ... + 37836.

Almost surely, 2^6116391 is an apocalyptic number.

6116391 is a deficient number, since it is larger than the sum of its proper divisors (3020561).

6116391 is an equidigital number, since it uses as much as digits as its factorization.

6116391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75523 (or 75514 counting only the distinct ones).

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

The square root of 6116391 is about 2473.1338419099. The cubic root of 6116391 is about 182.8795229595.

The spelling of 6116391 in words is "six million, one hundred sixteen thousand, three hundred ninety-one".