6381623 has 8 divisors (see below), whose sum is σ = 6504960. Its totient is φ = 6259680.

The previous prime is 6381619. The next prime is 6381643. The reversal of 6381623 is 3261836.

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 6381623 - 2² = 6381619 is a prime.

It is a super-2 number, since 2×6381623² = 81450224228258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6381643) 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, 13613 + ... + 14073.

It is an arithmetic number, because the mean of its divisors is an integer number (813120).

Almost surely, 2^6381623 is an apocalyptic number.

6381623 is a deficient number, since it is larger than the sum of its proper divisors (123337).

6381623 is a wasteful number, since it uses less digits than its factorization.

6381623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697.

The product of its digits is 5184, while the sum is 29.

The square root of 6381623 is about 2526.1874435600. The cubic root of 6381623 is about 185.4856778223.

The spelling of 6381623 in words is "six million, three hundred eighty-one thousand, six hundred twenty-three".