648057750 has 32 divisors (see below), whose sum is σ = 1617554016. Its totient is φ = 172815200.

The previous prime is 648057749. The next prime is 648057779. The reversal of 648057750 is 57750846.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 431289 + ... + 432788.

It is an arithmetic number, because the mean of its divisors is an integer number (50548563).

Almost surely, 2^648057750 is an apocalyptic number.

648057750 is an abundant number, since it is smaller than the sum of its proper divisors (969496266).

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

648057750 is a wasteful number, since it uses less digits than its factorization.

648057750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864097 (or 864087 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 42.

The square root of 648057750 is about 25456.9784145723. The cubic root of 648057750 is about 865.3754481840.

The spelling of 648057750 in words is "six hundred forty-eight million, fifty-seven thousand, seven hundred fifty".