207678648 has 64 divisors (see below), whose sum is σ = 540144000. Its totient is φ = 66487680.

The previous prime is 207678637. The next prime is 207678673. The reversal of 207678648 is 846876702.

It is a junction number, because it is equal to n+sod(n) for n = 207678597 and 207678606.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 61303 + ... + 64601.

It is an arithmetic number, because the mean of its divisors is an integer number (8439750).

Almost surely, 2^207678648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 207678648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270072000).

207678648 is an abundant number, since it is smaller than the sum of its proper divisors (332465352).

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

207678648 is a wasteful number, since it uses less digits than its factorization.

207678648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3412 (or 3408 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 48.

The square root of 207678648 is about 14411.0599193814. The cubic root of 207678648 is about 592.1939269098.

The spelling of 207678648 in words is "two hundred seven million, six hundred seventy-eight thousand, six hundred forty-eight".