648696106 has 4 divisors (see below), whose sum is σ = 973044162. Its totient is φ = 324348052.

The previous prime is 648696089. The next prime is 648696107. The reversal of 648696106 is 601696846.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 601696846 = 2 ⋅300848423.

It can be written as a sum of positive squares in only one way, i.e., 435097881 + 213598225 = 20859^2 + 14615^2 .

It is not an unprimeable number, because it can be changed into a prime (648696107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162174025 + ... + 162174028.

Almost surely, 2^648696106 is an apocalyptic number.

648696106 is a deficient number, since it is larger than the sum of its proper divisors (324348056).

648696106 is a wasteful number, since it uses less digits than its factorization.

648696106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324348055.

The product of its (nonzero) digits is 373248, while the sum is 46.

The square root of 648696106 is about 25469.5132658636. The cubic root of 648696106 is about 865.6594950539.

The spelling of 648696106 in words is "six hundred forty-eight million, six hundred ninety-six thousand, one hundred six".