650379520 has 144 divisors (see below), whose sum is σ = 1842543360. Its totient is φ = 215212032.

The previous prime is 650379493. The next prime is 650379529. The reversal of 650379520 is 25973056.

It is a self number, because there is not a number n which added to its sum of digits gives 650379520.

It is not an unprimeable number, because it can be changed into a prime (650379529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 258589 + ... + 261091.

It is an arithmetic number, because the mean of its divisors is an integer number (12795440).

Almost surely, 2^650379520 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 650379520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (921271680).

650379520 is an abundant number, since it is smaller than the sum of its proper divisors (1192163840).

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

650379520 is a wasteful number, since it uses less digits than its factorization.

650379520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2560 (or 2546 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 37.

The square root of 650379520 is about 25502.5394813928. The cubic root of 650379520 is about 866.4076648803.

The spelling of 650379520 in words is "six hundred fifty million, three hundred seventy-nine thousand, five hundred twenty".