650568240 has 320 divisors, whose sum is σ = 2712683520. Its totient is φ = 139898880.

The previous prime is 650568221. The next prime is 650568251. The reversal of 650568240 is 42865056.

650568240 is a `hidden beast` number, since 6 + 50 + 568 + 2 + 40 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 650568195 and 650568204.

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 63 ways as a sum of consecutive naturals, for example, 255775 + ... + 258305.

It is an arithmetic number, because the mean of its divisors is an integer number (8477136).

Almost surely, 2^650568240 is an apocalyptic number.

650568240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 650568240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1356341760).

650568240 is an abundant number, since it is smaller than the sum of its proper divisors (2062115280).

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

650568240 is a wasteful number, since it uses less digits than its factorization.

650568240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2577 (or 2565 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 650568240 is about 25506.2392367044. The cubic root of 650568240 is about 866.4914583358.

The spelling of 650568240 in words is "six hundred fifty million, five hundred sixty-eight thousand, two hundred forty".