648688950075 has 18 divisors (see below), whose sum is σ = 1072510596372. Its totient is φ = 345963720000.

The previous prime is 648688950047. The next prime is 648688950079. The reversal of 648688950075 is 570059886846.

It is not a de Polignac number, because 648688950075 - 2⁹ = 648688949563 is a prime.

It is a super-3 number, since 3×648688950075³ (a number of 36 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 648688949988 and 648688950015.

It is not an unprimeable number, because it can be changed into a prime (648688950079) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6928575 + ... + 7021575.

Almost surely, 2^648688950075 is an apocalyptic number.

648688950075 is a deficient number, since it is larger than the sum of its proper divisors (423821646297).

648688950075 is an frugal number, since it uses more digits than its factorization.

648688950075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186015 (or 93009 counting only the distinct ones).

The product of its (nonzero) digits is 116121600, while the sum is 66.

The spelling of 648688950075 in words is "six hundred forty-eight billion, six hundred eighty-eight million, nine hundred fifty thousand, seventy-five".