648774 has 48 divisors (see below), whose sum is σ = 1697280. Its totient is φ = 174960.

The previous prime is 648763. The next prime is 648779. The reversal of 648774 is 477846.

It is a happy number.

648774 is a `hidden beast` number, since 648 + 7 + 7 + 4 = 666.

648774 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648779) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2259 + ... + 2529.

It is an arithmetic number, because the mean of its divisors is an integer number (35360).

2⁶⁴⁸⁷⁷⁴ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 648774, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (848640).

648774 is an abundant number, since it is smaller than the sum of its proper divisors (1048506).

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

648774 is a wasteful number, since it uses less digits than its factorization.

648774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305 (or 302 counting only the distinct ones).

The product of its digits is 37632, while the sum is 36.

The square root of 648774 is about 805.4650830421. The cubic root of 648774 is about 86.5694142496.

It can be divided in two parts, 6487 and 74, that added together give a 8-th power (6561 = 3⁸).

The spelling of 648774 in words is "six hundred forty-eight thousand, seven hundred seventy-four".