6398630 has 64 divisors (see below), whose sum is σ = 14722560. Its totient is φ = 1949184.

The previous prime is 6398629. The next prime is 6398633. The reversal of 6398630 is 368936.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Curzon number.

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 31 ways as a sum of consecutive naturals, for example, 22469 + ... + 22751.

It is an arithmetic number, because the mean of its divisors is an integer number (230040).

Almost surely, 2^6398630 is an apocalyptic number.

6398630 is an abundant number, since it is smaller than the sum of its proper divisors (8323930).

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

6398630 is a wasteful number, since it uses less digits than its factorization.

6398630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 6398630 is about 2529.5513436181. The cubic root of 6398630 is about 185.6503045310.

The spelling of 6398630 in words is "six million, three hundred ninety-eight thousand, six hundred thirty".