648937 has 2 divisors, whose sum is σ = 648938. Its totient is φ = 648936.

The previous prime is 648931. The next prime is 648953. The reversal of 648937 is 739846.

648937 is nontrivially palindromic in base 16.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 549081 + 99856 = 741^2 + 316^2 .

It is a cyclic number.

It is not a de Polignac number, because 648937 - 2¹¹ = 646889 is a prime.

It is a super-2 number, since 2×648937² = 842238459938, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 648896 and 648905.

It is not a weakly prime, because it can be changed into another prime (648931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324468 + 324469.

It is an arithmetic number, because the mean of its divisors is an integer number (324469).

2⁶⁴⁸⁹³⁷ is an apocalyptic number.

It is an amenable number.

648937 is a deficient number, since it is larger than the sum of its proper divisors (1).

648937 is an equidigital number, since it uses as much as digits as its factorization.

648937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 37.

The square root of 648937 is about 805.5662604653. The cubic root of 648937 is about 86.5766636322.

Subtracting 648937 from its reverse (739846), we obtain a palindrome (90909).

The spelling of 648937 in words is "six hundred forty-eight thousand, nine hundred thirty-seven".