648151040 has 144 divisors (see below), whose sum is σ = 1660938048. Its totient is φ = 242221056.

The previous prime is 648151033. The next prime is 648151117. The reversal of 648151040 is 40151846.

It is a junction number, because it is equal to n+sod(n) for n = 648150994 and 648151012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15073259 + ... + 15073301.

It is an arithmetic number, because the mean of its divisors is an integer number (11534292).

Almost surely, 2^648151040 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 648151040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (830469024).

648151040 is an abundant number, since it is smaller than the sum of its proper divisors (1012787008).

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

648151040 is an frugal number, since it uses more digits than its factorization.

648151040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105 (or 73 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 648151040 is about 25458.8106556453. The cubic root of 648151040 is about 865.4169707191.

The spelling of 648151040 in words is "six hundred forty-eight million, one hundred fifty-one thousand, forty".