6398699 has 4 divisors (see below), whose sum is σ = 6413400. Its totient is φ = 6384000.

The previous prime is 6398671. The next prime is 6398723. The reversal of 6398699 is 9968936.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6398699 - 2¹² = 6394603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6398629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6677 + ... + 7574.

It is an arithmetic number, because the mean of its divisors is an integer number (1603350).

Almost surely, 2^6398699 is an apocalyptic number.

6398699 is a deficient number, since it is larger than the sum of its proper divisors (14701).

6398699 is a wasteful number, since it uses less digits than its factorization.

6398699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14700.

The product of its digits is 629856, while the sum is 50.

The square root of 6398699 is about 2529.5649823636. The cubic root of 6398699 is about 185.6509718522.

The spelling of 6398699 in words is "six million, three hundred ninety-eight thousand, six hundred ninety-nine".