648589695 has 64 divisors (see below), whose sum is σ = 1189157760. Its totient is φ = 300079104.

The previous prime is 648589693. The next prime is 648589717. The reversal of 648589695 is 596985846.

It is not a de Polignac number, because 648589695 - 2¹ = 648589693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648589691) 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 63 ways as a sum of consecutive naturals, for example, 957697 + ... + 958373.

It is an arithmetic number, because the mean of its divisors is an integer number (18580590).

Almost surely, 2^648589695 is an apocalyptic number.

648589695 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

648589695 is a deficient number, since it is larger than the sum of its proper divisors (540568065).

648589695 is a wasteful number, since it uses less digits than its factorization.

648589695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749 (or 715 counting only the distinct ones).

The product of its digits is 18662400, while the sum is 60.

The square root of 648589695 is about 25467.4241924856. The cubic root of 648589695 is about 865.6121586977.

The spelling of 648589695 in words is "six hundred forty-eight million, five hundred eighty-nine thousand, six hundred ninety-five".