650122840 has 48 divisors (see below), whose sum is σ = 1553911200. Its totient is φ = 244747776.

The previous prime is 650122813. The next prime is 650122843. The reversal of 650122840 is 48221056.

It is a junction number, because it is equal to n+sod(n) for n = 650122799 and 650122808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650122843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16560 + ... + 39679.

It is an arithmetic number, because the mean of its divisors is an integer number (32373150).

Almost surely, 2^650122840 is an apocalyptic number.

It is an amenable number.

650122840 is an abundant number, since it is smaller than the sum of its proper divisors (903788360).

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

650122840 is a wasteful number, since it uses less digits than its factorization.

650122840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56284 (or 56263 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 650122840 is about 25497.5065447585. The cubic root of 650122840 is about 866.2936705251.

Adding to 650122840 its reverse (48221056), we get a palindrome (698343896).

The spelling of 650122840 in words is "six hundred fifty million, one hundred twenty-two thousand, eight hundred forty".