648967 has 4 divisors (see below), whose sum is σ = 707976. Its totient is φ = 589960.

The previous prime is 648961. The next prime is 648971. The reversal of 648967 is 769846.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 648967 - 2¹⁹ = 124679 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648961) 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 3 ways as a sum of consecutive naturals, for example, 29488 + ... + 29509.

It is an arithmetic number, because the mean of its divisors is an integer number (176994).

2⁶⁴⁸⁹⁶⁷ is an apocalyptic number.

648967 is a deficient number, since it is larger than the sum of its proper divisors (59009).

648967 is a wasteful number, since it uses less digits than its factorization.

648967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59008.

The product of its digits is 72576, while the sum is 40.

The square root of 648967 is about 805.5848806923. The cubic root of 648967 is about 86.5779977422.

It can be divided in two parts, 6489 and 67, that added together give a palindrome (6556).

The spelling of 648967 in words is "six hundred forty-eight thousand, nine hundred sixty-seven".