6291381 has 8 divisors (see below), whose sum is σ = 8506944. Its totient is φ = 4135040.

The previous prime is 6291353. The next prime is 6291403. The reversal of 6291381 is 1831926.

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

It is not a de Polignac number, because 6291381 - 2⁷ = 6291253 is a prime.

It is a super-2 number, since 2×6291381² = 79162949774322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6291301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14556 + ... + 14981.

It is an arithmetic number, because the mean of its divisors is an integer number (1063368).

Almost surely, 2^6291381 is an apocalyptic number.

It is an amenable number.

6291381 is a deficient number, since it is larger than the sum of its proper divisors (2215563).

6291381 is a wasteful number, since it uses less digits than its factorization.

6291381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29611.

The product of its digits is 2592, while the sum is 30.

The square root of 6291381 is about 2508.2625460665. The cubic root of 6291381 is about 184.6072114304.

The spelling of 6291381 in words is "six million, two hundred ninety-one thousand, three hundred eighty-one".