6398824 has 8 divisors (see below), whose sum is σ = 11997810. Its totient is φ = 3199408.

The previous prime is 6398813. The next prime is 6398857. The reversal of 6398824 is 4288936.

It can be written as a sum of positive squares in only one way, i.e., 4202500 + 2196324 = 2050^2 + 1482^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 399919 + ... + 399934.

Almost surely, 2^6398824 is an apocalyptic number.

It is an amenable number.

6398824 is a deficient number, since it is larger than the sum of its proper divisors (5598986).

6398824 is a wasteful number, since it uses less digits than its factorization.

6398824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799859 (or 799855 counting only the distinct ones).

The product of its digits is 82944, while the sum is 40.

The square root of 6398824 is about 2529.5896900486. The cubic root of 6398824 is about 185.6521807553.

The spelling of 6398824 in words is "six million, three hundred ninety-eight thousand, eight hundred twenty-four".