6398613 has 24 divisors (see below), whose sum is σ = 10542168. Its totient is φ = 3704832.

The previous prime is 6398599. The next prime is 6398621. The reversal of 6398613 is 3168936.

It is a happy number.

6398613 is a `hidden beast` number, since 6 + 39 + 8 + 613 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1912689 + 4485924 = 1383^2 + 2118^2 .

It is not a de Polignac number, because 6398613 - 2⁴ = 6398597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6398633) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 381 + ... + 3597.

It is an arithmetic number, because the mean of its divisors is an integer number (439257).

Almost surely, 2^6398613 is an apocalyptic number.

It is an amenable number.

6398613 is a deficient number, since it is larger than the sum of its proper divisors (4143555).

6398613 is a wasteful number, since it uses less digits than its factorization.

6398613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3253 (or 3250 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 6398613 is about 2529.5479833362. The cubic root of 6398613 is about 185.6501401178.

The spelling of 6398613 in words is "six million, three hundred ninety-eight thousand, six hundred thirteen".