648477 has 6 divisors (see below), whose sum is σ = 936702. Its totient is φ = 432312.

The previous prime is 648449. The next prime is 648481. The reversal of 648477 is 774846.

It is a happy number.

648477 is a `hidden beast` number, since 648 + 4 + 7 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 423801 + 224676 = 651^2 + 474^2 .

It is not a de Polignac number, because 648477 - 2¹⁰ = 647453 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 648477.

It is not an unprimeable number, because it can be changed into a prime (648437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36018 + ... + 36035.

It is an arithmetic number, because the mean of its divisors is an integer number (156117).

2⁶⁴⁸⁴⁷⁷ is an apocalyptic number.

It is an amenable number.

648477 is a deficient number, since it is larger than the sum of its proper divisors (288225).

648477 is a wasteful number, since it uses less digits than its factorization.

648477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72059 (or 72056 counting only the distinct ones).

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

The square root of 648477 is about 805.2806964034. The cubic root of 648477 is about 86.5562021293.

It can be divided in two parts, 6484 and 77, that added together give a 8-th power (6561 = 3⁸).

The spelling of 648477 in words is "six hundred forty-eight thousand, four hundred seventy-seven".