6321864 has 16 divisors (see below), whose sum is σ = 15804720. Its totient is φ = 2107280.

The previous prime is 6321863. The next prime is 6321871. The reversal of 6321864 is 4681236.

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

It is not an unprimeable number, because it can be changed into a prime (6321863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131682 + ... + 131729.

It is an arithmetic number, because the mean of its divisors is an integer number (987795).

Almost surely, 2^6321864 is an apocalyptic number.

It is an amenable number.

6321864 is an abundant number, since it is smaller than the sum of its proper divisors (9482856).

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

6321864 is a wasteful number, since it uses less digits than its factorization.

6321864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263420 (or 263416 counting only the distinct ones).

The product of its digits is 6912, while the sum is 30.

The square root of 6321864 is about 2514.3317203583. The cubic root of 6321864 is about 184.9048841467.

The spelling of 6321864 in words is "six million, three hundred twenty-one thousand, eight hundred sixty-four".