6415998 has 16 divisors (see below), whose sum is σ = 12858240. Its totient is φ = 2134296.

The previous prime is 6415979. The next prime is 6415999. The reversal of 6415998 is 8995146.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6415999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3711 + ... + 5157.

It is an arithmetic number, because the mean of its divisors is an integer number (803640).

Almost surely, 2^6415998 is an apocalyptic number.

6415998 is an abundant number, since it is smaller than the sum of its proper divisors (6442242).

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

6415998 is a wasteful number, since it uses less digits than its factorization.

6415998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2191.

The product of its digits is 77760, while the sum is 42.

The square root of 6415998 is about 2532.9820370465. The cubic root of 6415998 is about 185.8181249103.

The spelling of 6415998 in words is "six million, four hundred fifteen thousand, nine hundred ninety-eight".