648674347 has 4 divisors (see below), whose sum is σ = 648733960. Its totient is φ = 648614736.

The previous prime is 648674309. The next prime is 648674357. The reversal of 648674347 is 743476846.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-648674347 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 648674347.

It is not an unprimeable number, because it can be changed into a prime (648674357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8322 + ... + 36967.

It is an arithmetic number, because the mean of its divisors is an integer number (162183490).

Almost surely, 2^648674347 is an apocalyptic number.

648674347 is a deficient number, since it is larger than the sum of its proper divisors (59613).

648674347 is a wasteful number, since it uses less digits than its factorization.

648674347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59612.

The product of its digits is 2709504, while the sum is 49.

The square root of 648674347 is about 25469.0861045307. The cubic root of 648674347 is about 865.6498161018.

The spelling of 648674347 in words is "six hundred forty-eight million, six hundred seventy-four thousand, three hundred forty-seven".