648023850 has 288 divisors, whose sum is σ = 2005585920. Its totient is φ = 149022720.

The previous prime is 648023813. The next prime is 648023869. The reversal of 648023850 is 58320846.

648023850 is a `hidden beast` number, since 648 + 0 + 2 + 3 + 8 + 5 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 5102487 + ... + 5102613.

It is an arithmetic number, because the mean of its divisors is an integer number (6963840).

Almost surely, 2^648023850 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 648023850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1002792960).

648023850 is an abundant number, since it is smaller than the sum of its proper divisors (1357562070).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

648023850 is a wasteful number, since it uses less digits than its factorization.

648023850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214 (or 206 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 648023850 is about 25456.3125766479. The cubic root of 648023850 is about 865.3603586135.

The spelling of 648023850 in words is "six hundred forty-eight million, twenty-three thousand, eight hundred fifty".