6397632 has 84 divisors (see below), whose sum is σ = 19019520. Its totient is φ = 2053632.

The previous prime is 6397631. The next prime is 6397649. The reversal of 6397632 is 2367936.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (6397631) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16513 + ... + 16895.

Almost surely, 2^6397632 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6397632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9509760).

6397632 is an abundant number, since it is smaller than the sum of its proper divisors (12621888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6397632 is a wasteful number, since it uses less digits than its factorization.

6397632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430 (or 417 counting only the distinct ones).

The product of its digits is 40824, while the sum is 36.

The square root of 6397632 is about 2529.3540677414. The cubic root of 6397632 is about 185.6406520149.

The spelling of 6397632 in words is "six million, three hundred ninety-seven thousand, six hundred thirty-two".