650650566 has 16 divisors (see below), whose sum is σ = 1333040688. Its totient is φ = 211593600.

The previous prime is 650650543. The next prime is 650650579. The reversal of 650650566 is 665056056.

It is a happy number.

It is a super-3 number, since 3×650650566³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 1322215 + ... + 1322706.

It is an arithmetic number, because the mean of its divisors is an integer number (83315043).

Almost surely, 2^650650566 is an apocalyptic number.

650650566 is an abundant number, since it is smaller than the sum of its proper divisors (682390122).

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

650650566 is a wasteful number, since it uses less digits than its factorization.

650650566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2644967.

The product of its (nonzero) digits is 162000, while the sum is 39.

The square root of 650650566 is about 25507.8530260781. The cubic root of 650650566 is about 866.5280067779.

The spelling of 650650566 in words is "six hundred fifty million, six hundred fifty thousand, five hundred sixty-six".