6447898 has 8 divisors (see below), whose sum is σ = 9700308. Its totient is φ = 3214464.

The previous prime is 6447853. The next prime is 6447899. The reversal of 6447898 is 8987446.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6365529 + 82369 = 2523^2 + 287^2 .

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

It is not an unprimeable number, because it can be changed into a prime (6447899) 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, 3861 + ... + 5272.

Almost surely, 2^6447898 is an apocalyptic number.

6447898 is a deficient number, since it is larger than the sum of its proper divisors (3252410).

6447898 is a wasteful number, since it uses less digits than its factorization.

6447898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9488.

The product of its digits is 387072, while the sum is 46.

The square root of 6447898 is about 2539.2711552727. The cubic root of 6447898 is about 186.1255751999.

The spelling of 6447898 in words is "six million, four hundred forty-seven thousand, eight hundred ninety-eight".