648333851 has 6 divisors (see below), whose sum is σ = 712631556. Its totient is φ = 589394300.

The previous prime is 648333823. The next prime is 648333893. The reversal of 648333851 is 158333846.

It is a de Polignac number, because none of the positive numbers 2^k-648333851 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 648333799 and 648333808.

It is not an unprimeable number, because it can be changed into a prime (648333551) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2678945 + ... + 2679186.

It is an arithmetic number, because the mean of its divisors is an integer number (118771926).

Almost surely, 2^648333851 is an apocalyptic number.

648333851 is a deficient number, since it is larger than the sum of its proper divisors (64297705).

648333851 is a wasteful number, since it uses less digits than its factorization.

648333851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5358153 (or 5358142 counting only the distinct ones).

The product of its digits is 207360, while the sum is 41.

The square root of 648333851 is about 25462.4007312743. The cubic root of 648333851 is about 865.4983266893.

The spelling of 648333851 in words is "six hundred forty-eight million, three hundred thirty-three thousand, eight hundred fifty-one".