648382072 has 64 divisors (see below), whose sum is σ = 1351728000. Its totient is φ = 289695744.

The previous prime is 648382069. The next prime is 648382099. The reversal of 648382072 is 270283846.

It is a super-2 number, since 2×648382072² = 840798622582026368, which contains 22 as substring.

It is a congruent number.

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, 434704 + ... + 436192.

It is an arithmetic number, because the mean of its divisors is an integer number (21120750).

Almost surely, 2^648382072 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 648382072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (675864000).

648382072 is an abundant number, since it is smaller than the sum of its proper divisors (703345928).

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

648382072 is a wasteful number, since it uses less digits than its factorization.

648382072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1640 (or 1636 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 648382072 is about 25463.3476196670. The cubic root of 648382072 is about 865.5197838239.

The spelling of 648382072 in words is "six hundred forty-eight million, three hundred eighty-two thousand, seventy-two".