6497381 has 8 divisors (see below), whose sum is σ = 7154400. Its totient is φ = 5851440.

The previous prime is 6497377. The next prime is 6497389. The reversal of 6497381 is 1837946.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6497381 - 2² = 6497377 is a prime.

It is a super-2 number, since 2×6497381² = 84431919718322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6497389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1511 + ... + 3908.

It is an arithmetic number, because the mean of its divisors is an integer number (894300).

Almost surely, 2^6497381 is an apocalyptic number.

It is an amenable number.

6497381 is a deficient number, since it is larger than the sum of its proper divisors (657019).

6497381 is a wasteful number, since it uses less digits than its factorization.

6497381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5539.

The product of its digits is 36288, while the sum is 38.

The square root of 6497381 is about 2548.9960768899. The cubic root of 6497381 is about 186.6004892257.

The spelling of 6497381 in words is "six million, four hundred ninety-seven thousand, three hundred eighty-one".