648955733 has 8 divisors (see below), whose sum is σ = 651984576. Its totient is φ = 645933600.

The previous prime is 648955721. The next prime is 648955751. The reversal of 648955733 is 337559846.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 648955733 - 2⁴ = 648955717 is a prime.

It is a super-2 number, since 2×648955733² = 842287086787134578, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648955753) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321698 + ... + 323708.

It is an arithmetic number, because the mean of its divisors is an integer number (81498072).

Almost surely, 2^648955733 is an apocalyptic number.

It is an amenable number.

648955733 is a deficient number, since it is larger than the sum of its proper divisors (3028843).

648955733 is a wasteful number, since it uses less digits than its factorization.

648955733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3355.

The product of its digits is 2721600, while the sum is 50.

The square root of 648955733 is about 25474.6095750259. The cubic root of 648955733 is about 865.7749669976.

The spelling of 648955733 in words is "six hundred forty-eight million, nine hundred fifty-five thousand, seven hundred thirty-three".