6398536 has 8 divisors (see below), whose sum is σ = 11997270. Its totient is φ = 3199264.

The previous prime is 6398519. The next prime is 6398537. The reversal of 6398536 is 6358936.

It can be written as a sum of positive squares in only one way, i.e., 4972900 + 1425636 = 2230^2 + 1194^2 .

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

It is not an unprimeable number, because it can be changed into a prime (6398537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 399901 + ... + 399916.

Almost surely, 2^6398536 is an apocalyptic number.

It is an amenable number.

6398536 is a deficient number, since it is larger than the sum of its proper divisors (5598734).

6398536 is a wasteful number, since it uses less digits than its factorization.

6398536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799823 (or 799819 counting only the distinct ones).

The product of its digits is 116640, while the sum is 40.

The square root of 6398536 is about 2529.5327631798. The cubic root of 6398536 is about 185.6493954190.

The spelling of 6398536 in words is "six million, three hundred ninety-eight thousand, five hundred thirty-six".