648626085 has 48 divisors (see below), whose sum is σ = 1208712960. Its totient is φ = 320734080.

The previous prime is 648626081. The next prime is 648626119. The reversal of 648626085 is 580626846.

It is not a de Polignac number, because 648626085 - 2² = 648626081 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 648626085.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648626081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32115 + ... + 48255.

It is an arithmetic number, because the mean of its divisors is an integer number (25181520).

Almost surely, 2^648626085 is an apocalyptic number.

It is an amenable number.

648626085 is a deficient number, since it is larger than the sum of its proper divisors (560086875).

648626085 is a wasteful number, since it uses less digits than its factorization.

648626085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16218 (or 16215 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The square root of 648626085 is about 25468.1386245638. The cubic root of 648626085 is about 865.6283471743.

The spelling of 648626085 in words is "six hundred forty-eight million, six hundred twenty-six thousand, eighty-five".