648971298 has 32 divisors (see below), whose sum is σ = 1488683520. Its totient is φ = 209345040.

The previous prime is 648971287. The next prime is 648971303. The reversal of 648971298 is 892179846.

648971298 is a `hidden beast` number, since 6 + 489 + 71 + 2 + 98 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 192165 + ... + 195512.

It is an arithmetic number, because the mean of its divisors is an integer number (46521360).

Almost surely, 2^648971298 is an apocalyptic number.

648971298 is an abundant number, since it is smaller than the sum of its proper divisors (839712222).

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

648971298 is a wasteful number, since it uses less digits than its factorization.

648971298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387719 (or 387713 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The square root of 648971298 is about 25474.9150734600. The cubic root of 648971298 is about 865.7818887228.

The spelling of 648971298 in words is "six hundred forty-eight million, nine hundred seventy-one thousand, two hundred ninety-eight".