648082865 has 16 divisors (see below), whose sum is σ = 806086080. Its totient is φ = 499611840.

The previous prime is 648082847. The next prime is 648082867. The reversal of 648082865 is 568280846.

648082865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 648082865 - 2¹⁸ = 647820721 is a prime.

It is a super-2 number, since 2×648082865² = 840022799813216450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (648082867) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75230 + ... + 83400.

It is an arithmetic number, because the mean of its divisors is an integer number (50380380).

Almost surely, 2^648082865 is an apocalyptic number.

It is an amenable number.

648082865 is a deficient number, since it is larger than the sum of its proper divisors (158003215).

648082865 is a wasteful number, since it uses less digits than its factorization.

648082865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8752.

The product of its (nonzero) digits is 737280, while the sum is 47.

The square root of 648082865 is about 25457.4716930020. The cubic root of 648082865 is about 865.3866270353.

The spelling of 648082865 in words is "six hundred forty-eight million, eighty-two thousand, eight hundred sixty-five".