6398523 has 12 divisors (see below), whose sum is σ = 9369880. Its totient is φ = 4206816.

The previous prime is 6398519. The next prime is 6398537. The reversal of 6398523 is 3258936.

It is not a de Polignac number, because 6398523 - 2² = 6398519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6398543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4213 + ... + 5526.

Almost surely, 2^6398523 is an apocalyptic number.

6398523 is a deficient number, since it is larger than the sum of its proper divisors (2971357).

6398523 is a wasteful number, since it uses less digits than its factorization.

6398523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9818 (or 9815 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 6398523 is about 2529.5301935340. The cubic root of 6398523 is about 185.6492696900.

The spelling of 6398523 in words is "six million, three hundred ninety-eight thousand, five hundred twenty-three".