650505556 has 12 divisors (see below), whose sum is σ = 1141978068. Its totient is φ = 324226112.

The previous prime is 650505553. The next prime is 650505577. The reversal of 650505556 is 655505056.

It can be written as a sum of positive squares in 2 ways, for example, as 385336900 + 265168656 = 19630^2 + 16284^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650505551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255241 + ... + 257776.

It is an arithmetic number, because the mean of its divisors is an integer number (95164839).

Almost surely, 2^650505556 is an apocalyptic number.

It is an amenable number.

650505556 is a deficient number, since it is larger than the sum of its proper divisors (491472512).

650505556 is a wasteful number, since it uses less digits than its factorization.

650505556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513338 (or 513336 counting only the distinct ones).

The product of its (nonzero) digits is 112500, while the sum is 37.

The square root of 650505556 is about 25505.0104097215. The cubic root of 650505556 is about 866.4636278476.

Subtracting from 650505556 its product of nonzero digits (112500), we obtain a palindrome (650393056).

The spelling of 650505556 in words is "six hundred fifty million, five hundred five thousand, five hundred fifty-six".