648538334 has 8 divisors (see below), whose sum is σ = 985121760. Its totient is φ = 320164416.

The previous prime is 648538333. The next prime is 648538349. The reversal of 648538334 is 433835846.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648538333) 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, 2052179 + ... + 2052494.

It is an arithmetic number, because the mean of its divisors is an integer number (123140220).

Almost surely, 2^648538334 is an apocalyptic number.

648538334 is a deficient number, since it is larger than the sum of its proper divisors (336583426).

648538334 is a wasteful number, since it uses less digits than its factorization.

648538334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4104754.

The product of its digits is 829440, while the sum is 44.

The square root of 648538334 is about 25466.4158059198. The cubic root of 648538334 is about 865.5893091828.

The spelling of 648538334 in words is "six hundred forty-eight million, five hundred thirty-eight thousand, three hundred thirty-four".