648888246 has 48 divisors (see below), whose sum is σ = 1466337600. Its totient is φ = 215058888.

The previous prime is 648888239. The next prime is 648888271. The reversal of 648888246 is 642888846.

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

It is a junction number, because it is equal to n+sod(n) for n = 648888192 and 648888201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 83265 + ... + 90723.

It is an arithmetic number, because the mean of its divisors is an integer number (30548700).

Almost surely, 2^648888246 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 648888246, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (733168800).

648888246 is an abundant number, since it is smaller than the sum of its proper divisors (817449354).

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

648888246 is a wasteful number, since it uses less digits than its factorization.

648888246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7655 (or 7643 counting only the distinct ones).

The product of its digits is 4718592, while the sum is 54.

The square root of 648888246 is about 25473.2849471755. The cubic root of 648888246 is about 865.7449543801.

The spelling of 648888246 in words is "six hundred forty-eight million, eight hundred eighty-eight thousand, two hundred forty-six".