648785653 has 8 divisors (see below), whose sum is σ = 662232960. Its totient is φ = 635420160.

The previous prime is 648785629. The next prime is 648785689. The reversal of 648785653 is 356587846.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 648785653 - 2¹⁷ = 648654581 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 648785653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648785623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4300 + ... + 36277.

It is an arithmetic number, because the mean of its divisors is an integer number (82779120).

Almost surely, 2^648785653 is an apocalyptic number.

It is an amenable number.

648785653 is a deficient number, since it is larger than the sum of its proper divisors (13447307).

648785653 is a wasteful number, since it uses less digits than its factorization.

648785653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40907.

The product of its digits is 4838400, while the sum is 52.

The square root of 648785653 is about 25471.2711304324. The cubic root of 648785653 is about 865.6993255403.

The spelling of 648785653 in words is "six hundred forty-eight million, seven hundred eighty-five thousand, six hundred fifty-three".