648607236 has 24 divisors (see below), whose sum is σ = 1514120160. Its totient is φ = 216101952.

The previous prime is 648607217. The next prime is 648607277. The reversal of 648607236 is 632706846.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17155 + ... + 39893.

It is an arithmetic number, because the mean of its divisors is an integer number (63088340).

Almost surely, 2^648607236 is an apocalyptic number.

It is an amenable number.

648607236 is an abundant number, since it is smaller than the sum of its proper divisors (865512924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

648607236 is a wasteful number, since it uses less digits than its factorization.

648607236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25123 (or 25121 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 42.

The square root of 648607236 is about 25467.7685712746. The cubic root of 648607236 is about 865.6199620728.

The spelling of 648607236 in words is "six hundred forty-eight million, six hundred seven thousand, two hundred thirty-six".