6388634 has 24 divisors (see below), whose sum is σ = 11641440. Its totient is φ = 2575296.

The previous prime is 6388633. The next prime is 6388637. The reversal of 6388634 is 4368836.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6388633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3257 + ... + 4835.

It is an arithmetic number, because the mean of its divisors is an integer number (485060).

Almost surely, 2^6388634 is an apocalyptic number.

6388634 is a deficient number, since it is larger than the sum of its proper divisors (5252806).

6388634 is a wasteful number, since it uses less digits than its factorization.

6388634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1622 (or 1605 counting only the distinct ones).

The product of its digits is 82944, while the sum is 38.

The square root of 6388634 is about 2527.5747268874. The cubic root of 6388634 is about 185.5535792608.

The spelling of 6388634 in words is "six million, three hundred eighty-eight thousand, six hundred thirty-four".