648322834 has 4 divisors (see below), whose sum is σ = 972484254. Its totient is φ = 324161416.

The previous prime is 648322819. The next prime is 648322837. The reversal of 648322834 is 438223846.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 438223846 = 2 ⋅219111923.

It can be written as a sum of positive squares in only one way, i.e., 619860609 + 28462225 = 24897^2 + 5335^2 .

It is not an unprimeable number, because it can be changed into a prime (648322837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162080707 + ... + 162080710.

Almost surely, 2^648322834 is an apocalyptic number.

648322834 is a deficient number, since it is larger than the sum of its proper divisors (324161420).

648322834 is a wasteful number, since it uses less digits than its factorization.

648322834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324161419.

The product of its digits is 221184, while the sum is 40.

The square root of 648322834 is about 25462.1843917603. The cubic root of 648322834 is about 865.4934242515.

The spelling of 648322834 in words is "six hundred forty-eight million, three hundred twenty-two thousand, eight hundred thirty-four".