6447698 has 4 divisors (see below), whose sum is σ = 9671550. Its totient is φ = 3223848.

The previous prime is 6447691. The next prime is 6447733. The reversal of 6447698 is 8967446.

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

It can be written as a sum of positive squares in only one way, i.e., 4765489 + 1682209 = 2183^2 + 1297^2 .

It is not an unprimeable number, because it can be changed into a prime (6447691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1611923 + ... + 1611926.

Almost surely, 2^6447698 is an apocalyptic number.

6447698 is a deficient number, since it is larger than the sum of its proper divisors (3223852).

6447698 is a wasteful number, since it uses less digits than its factorization.

6447698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3223851.

The product of its digits is 290304, while the sum is 44.

The square root of 6447698 is about 2539.2317735882. The cubic root of 6447698 is about 186.1236507743.

The spelling of 6447698 in words is "six million, four hundred forty-seven thousand, six hundred ninety-eight".