6713991 has 6 divisors (see below), whose sum is σ = 9698000. Its totient is φ = 4475988.

The previous prime is 6713989. The next prime is 6714007. The reversal of 6713991 is 1993176.

6713991 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6713991 - 2¹ = 6713989 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6713911) 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, 372991 + ... + 373008.

Almost surely, 2^6713991 is an apocalyptic number.

6713991 is a deficient number, since it is larger than the sum of its proper divisors (2984009).

6713991 is a wasteful number, since it uses less digits than its factorization.

6713991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746005 (or 746002 counting only the distinct ones).

The product of its digits is 10206, while the sum is 36.

The square root of 6713991 is about 2591.1370091140. The cubic root of 6713991 is about 188.6514951708.

The spelling of 6713991 in words is "six million, seven hundred thirteen thousand, nine hundred ninety-one".