650004520 has 128 divisors (see below), whose sum is σ = 1715852160. Its totient is φ = 218972160.

The previous prime is 650004517. The next prime is 650004533. The reversal of 650004520 is 25400056.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 650004491 and 650004500.

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 31 ways as a sum of consecutive naturals, for example, 500512 + ... + 501808.

It is an arithmetic number, because the mean of its divisors is an integer number (13405095).

Almost surely, 2^650004520 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 650004520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (857926080).

650004520 is an abundant number, since it is smaller than the sum of its proper divisors (1065847640).

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

650004520 is a wasteful number, since it uses less digits than its factorization.

650004520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1403 (or 1399 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 650004520 is about 25495.1862123029. The cubic root of 650004520 is about 866.2411132341.

Adding to 650004520 its reverse (25400056), we get a palindrome (675404576).

The spelling of 650004520 in words is "six hundred fifty million, four thousand, five hundred twenty".