6490381 has 8 divisors (see below), whose sum is σ = 6894720. Its totient is φ = 6092352.

The previous prime is 6490373. The next prime is 6490391. The reversal of 6490381 is 1830946.

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 6490381 - 2³ = 6490373 is a prime.

It is a super-2 number, since 2×6490381² = 84250091050322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6490321) 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, 636 + ... + 3658.

It is an arithmetic number, because the mean of its divisors is an integer number (861840).

Almost surely, 2^6490381 is an apocalyptic number.

It is an amenable number.

6490381 is a deficient number, since it is larger than the sum of its proper divisors (404339).

6490381 is a wasteful number, since it uses less digits than its factorization.

6490381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3155.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 6490381 is about 2547.6226172650. The cubic root of 6490381 is about 186.5334533544.

The spelling of 6490381 in words is "six million, four hundred ninety thousand, three hundred eighty-one".