6459998 has 8 divisors (see below), whose sum is σ = 9707040. Its totient is φ = 3224320.

The previous prime is 6459991. The next prime is 6460031. The reversal of 6459998 is 8999546.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6459991) 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 3 ways as a sum of consecutive naturals, for example, 1238 + ... + 3801.

It is an arithmetic number, because the mean of its divisors is an integer number (1213380).

Almost surely, 2^6459998 is an apocalyptic number.

6459998 is a deficient number, since it is larger than the sum of its proper divisors (3247042).

6459998 is a wasteful number, since it uses less digits than its factorization.

6459998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5682.

The product of its digits is 699840, while the sum is 50.

The square root of 6459998 is about 2541.6526119830. The cubic root of 6459998 is about 186.2419289928.

The spelling of 6459998 in words is "six million, four hundred fifty-nine thousand, nine hundred ninety-eight".