648650 has 12 divisors (see below), whose sum is σ = 1206582. Its totient is φ = 259440.

The previous prime is 648649. The next prime is 648653. The reversal of 648650 is 56846.

It can be written as a sum of positive squares in 3 ways, for example, as 253009 + 395641 = 503^2 + 629^2 .

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (648653) 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, 6437 + ... + 6536.

2⁶⁴⁸⁶⁵⁰ is an apocalyptic number.

648650 is a deficient number, since it is larger than the sum of its proper divisors (557932).

648650 is a wasteful number, since it uses less digits than its factorization.

648650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12985 (or 12980 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 648650 is about 805.3881052015. The cubic root of 648650 is about 86.5638985685.

The spelling of 648650 in words is "six hundred forty-eight thousand, six hundred fifty".