6647598238 has 4 divisors (see below), whose sum is σ = 9971397360. Its totient is φ = 3323799118.

The previous prime is 6647598233. The next prime is 6647598241. The reversal of 6647598238 is 8328957466.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6647598233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1661899558 + ... + 1661899561.

It is an arithmetic number, because the mean of its divisors is an integer number (2492849340).

Almost surely, 2^6647598238 is an apocalyptic number.

6647598238 is a deficient number, since it is larger than the sum of its proper divisors (3323799122).

6647598238 is a wasteful number, since it uses less digits than its factorization.

6647598238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3323799121.

The product of its digits is 17418240, while the sum is 58.

The square root of 6647598238 is about 81532.8046739470. The cubic root of 6647598238 is about 1880.2759363725.

The spelling of 6647598238 in words is "six billion, six hundred forty-seven million, five hundred ninety-eight thousand, two hundred thirty-eight".