648085887 has 16 divisors (see below), whose sum is σ = 964960000. Its totient is φ = 429882552.

The previous prime is 648085871. The next prime is 648085891. The reversal of 648085887 is 788580846.

648085887 is a `hidden beast` number, since 6 + 480 + 85 + 8 + 87 = 666.

It is not a de Polignac number, because 648085887 - 2⁴ = 648085871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648085187) 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, 54937 + ... + 65682.

It is an arithmetic number, because the mean of its divisors is an integer number (60310000).

Almost surely, 2^648085887 is an apocalyptic number.

648085887 is a deficient number, since it is larger than the sum of its proper divisors (316874113).

648085887 is a wasteful number, since it uses less digits than its factorization.

648085887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120827 (or 120821 counting only the distinct ones).

The product of its (nonzero) digits is 3440640, while the sum is 54.

The square root of 648085887 is about 25457.5310468238. The cubic root of 648085887 is about 865.3879721278.

The spelling of 648085887 in words is "six hundred forty-eight million, eighty-five thousand, eight hundred eighty-seven".