650012520 has 64 divisors (see below), whose sum is σ = 1970176320. Its totient is φ = 171546624.

The previous prime is 650012509. The next prime is 650012521. The reversal of 650012520 is 25210056.

It is not an unprimeable number, because it can be changed into a prime (650012521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16282 + ... + 39561.

It is an arithmetic number, because the mean of its divisors is an integer number (30784005).

Almost surely, 2^650012520 is an apocalyptic number.

650012520 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

650012520 is an abundant number, since it is smaller than the sum of its proper divisors (1320163800).

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

650012520 is a wasteful number, since it uses less digits than its factorization.

650012520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55954 (or 55950 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 650012520 is about 25495.3431041828. The cubic root of 650012520 is about 866.2446670045.

Adding to 650012520 its reverse (25210056), we get a palindrome (675222576).

The spelling of 650012520 in words is "six hundred fifty million, twelve thousand, five hundred twenty".