648387 has 6 divisors (see below), whose sum is σ = 936572. Its totient is φ = 432252.

The previous prime is 648383. The next prime is 648391. The reversal of 648387 is 783846.

648387 is a `hidden beast` number, since 648 + 3 + 8 + 7 = 666.

648387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (648383) and next prime (648391).

It is not a de Polignac number, because 648387 - 2² = 648383 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 648387.

It is not an unprimeable number, because it can be changed into a prime (648383) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36013 + ... + 36030.

2⁶⁴⁸³⁸⁷ is an apocalyptic number.

648387 is a deficient number, since it is larger than the sum of its proper divisors (288185).

648387 is a wasteful number, since it uses less digits than its factorization.

648387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72049 (or 72046 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 648387 is about 805.2248133286. The cubic root of 648387 is about 86.5521976600.

It can be divided in two parts, 648 and 387, that added together give a triangular number (1035 = T₄₅).

The spelling of 648387 in words is "six hundred forty-eight thousand, three hundred eighty-seven".