6391332 has 96 divisors (see below), whose sum is σ = 18063360. Its totient is φ = 1948320.

The previous prime is 6391327. The next prime is 6391373. The reversal of 6391332 is 2331936.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 6391296 and 6391305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76963 + ... + 77045.

It is an arithmetic number, because the mean of its divisors is an integer number (188160).

Almost surely, 2^6391332 is an apocalyptic number.

6391332 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6391332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9031680).

6391332 is an abundant number, since it is smaller than the sum of its proper divisors (11672028).

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

6391332 is a wasteful number, since it uses less digits than its factorization.

6391332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150 (or 142 counting only the distinct ones).

The product of its digits is 2916, while the sum is 27.

The square root of 6391332 is about 2528.1083837526. The cubic root of 6391332 is about 185.5796961167.

The spelling of 6391332 in words is "six million, three hundred ninety-one thousand, three hundred thirty-two".